HP 39gII BUG: complex numbers and powers

Thr following: (0.02+0.01*i)^3 results in: 1.14486680448E−11+6.29676742464E−11*i the correct answer is: .000002+.000011*i the correct answer can be obtained by entering (0.02+0.01*i)*(0.02+0.01*i)*(0.02+0.01*i). Firmware version: 30/Oct/2013 Rev: 19148 I found this while using the calculator at work. I had put it aside due to previous frustrations, but this past week I decided to use it again - and very soon I run into a problem. This calculator has been for sale for almost two years. The last update was more than 6 months ago. It still has serious bugs. Is this becoming the forgotten brother of the Prime? Whenever I complain about the 39gii, I get reminded that other HP calulators e.g. 48GX also had bugs, but these have never affected me in daily work! Unfortunately I am losing my faith in the current development team.

Mmmm-- wrote:
It looks to me to be the case that as long as one of |a| or |b| is greater than 1 (not equal) in a+bi you'll get the correct answer when raising it to a power.The closer to zero the maximum of a and b is, the bigger the error!.
Unfortunately the numbers I use are not limited to the "good" range.

Similar Messages

Does java handle complex numbers and operations?

can i perform arithmetic operations in java with complex numbers, like
(a+b*i)+(c+d*i), where "i" is the imaginary variable.

There's no support in Java for complex numbers, but there's a proposed API,
http://www.vni.com/corner/garage/grande/index.html

Waveform and Complex Numbers

Great; in LV 7.0 Complex Numbers were included as an allowed subtype of Waveform data.
Bad; the vis supporting Complex numbers in Waveforms have a large number of errors. Many Vis does not handle complex numbers and therefore strip off the complex part at the output of the vi. I spent a lot of time to discover and correct the errors in the vis that I used.
Are NI or anybody else working on a patch for these VIs (part of vi.lib)?

You can let R&D directly know of these problems by going to www.ni.com >> contact NI >> feedback (bottom left). These reports go directly to the R&D managers. You can also contact tech support and have them file a report of the bad behavior. Be sure to provide example program and specific information.

How to use RLS with complex numbers as the input?

I import a file which have complex numbers, and I want to filter it using complex RLS adaptive filter, but it always freeze at the filtering and update then it returns one value in the matrix and all the other numbers are NaN, so how can I fix this.
The second thing is when I use FBLMS, it always return error 42020 unless I specify the filter length= number of the input which is huge number, so how do I specify normal filter length.

Hi engomar,
There is a detailed description of how to choose filter length in the Adaptive Filter Tollkit Help file.
http://zone.ni.com/reference/en-XX/help/372357B-01/lvaftconcepts/aft_choose_filterlength/
This page has several links to other important factors of what filter to choose. Under Computational Resource Requirements, it lists the memory usage for different filter types. RLS is the most memory intensive, which could be causing the freeze. Maybe try a LMS to see if this helps.
Robert R. | Applications Engineer | National Instruments

Using complex numbers in Fletcher Reeves optimization method

Hello,
I would like to minimize a function of 4 complex variables with the Fletcher Reeves optimization method (Conjugate Gradient VI).
Is it possible to do it with this VI or with HiQ4.5 ?
(for S-parameters specialists) The purpose is to de-embed using optimization method.
Thanks,
Dze

I believe that the "Conjugate Gradient nD.vi" and the optimize function in HiQ only work with real vectors. Most of the solve functions in HiQ work with complex numbers, and you may be able to create your own algorithm for the purpose, but I don't think that there is already a function that will do quite what you want.

In range and coerce with complex numbers?

I have an array of complex numbers with these numbers I need to set to 0 all numbers whose real parts are negative. With "in range and coerce" I can split the array into real and imaginary then set all negative numbers to 0 then recombine the complex part but that still leaves me with 0+ai numbers that should be 0. How can I also set the complex part to zero for the negative numbers?

Hello,
You can use the following fonction in a for loop with your array.
Michel

Having trouble converting array to spreadsheet string, storing the file and coverting back to array with complex numbers

I am working with a network analyzer. I have arrays made of 5 columns the first consisting of an integer and the next four consisting of complex numbers. I am converting the array into a spreadsheet string and then saving the file using the write characters to a file VI. That seems to work well as when I open the file in Excel all the data is there. However when I try to reverse the process, open file and convert back to array, I loose some of the data. Specifically the imaginary parts of my complex numbers are all going to zero. I have narrowed down the problem to be in the conversion from spreadsheet string to array and vice versa. I
think the problem may be with the 'format' input to the VI. I do not have an adequate resource for this so I am not sure what to put in to accomplish my task. Any takers?

Hi Biz
I don't think there is a direct way of converting a complex number to a
string, so when you convert the array to a spreadsheet string, the
numbers would be converted to real data.
However, you could try separating the real and imaginary parts using the
"Numeric: Complex to Re/Im" function, and then store these - either in
separate files or in adjacent columns/rows in the same file. Then, when
you read in the data again, use the "Numeric: Re/Im to Complex" function
to put the two "halves" together.
If you actually want Excel to interpret the numbers as imaginary, then
you'll probably want to create a string for each complex number of the
form "Re + Im*i" (after separating the Re and Im parts), by using
"String:Format into String" with 2 numeric inputs and the format string
"%f+%fi".
Reading the data back into Labview then would require splitting the
string into the 2 pieces by using "Stringcan from String" with 2
numeric outputs (smae precision as original numbers specified by the 2
Default Value inputs) and the same format string "%f+%fi", and then using
the above-mentioned "Numeric: Re/Im to Complex" function. It worked for
me, so if you can't follow what I am describing, send me an email and I
can email you what I did (LV 5.1.1).
Paul
Biz wrote:
> Having trouble converting array to spreadsheet string, storing the
> file and coverting back to array with complex numbers
>
> I am working with a network analyzer. I have arrays made of 5 columns
> the first consisting of an integer and the next four consisting of
> complex numbers. I am converting the array into a spreadsheet string
> and then saving the file using the write characters to a file VI. That
> seems to work well as when I open the file in Excel all the data is
> there. However when I try to reverse the process, open file and
> convert back to array, I loose some of the data. Specifically the
> imaginary parts of my complex numbers are all going to zero. I have
> narrowed down the problem to be in the conversion from spreadsheet
> string to array and vice versa. I think the problem may be with the
> 'format' input to the VI. I do not have an adequate resource for this
> so I am not sure what to put in to accomplish my task. Any takers?
Research Assistant
School of Physiotherapy, Curtin University of Technology
Selby Street, Shenton Park, Western Australia, Australia. 6008
email: [email protected]
Tel. +61 8 9266 4657 Fax. +61 8 9266 3699
"Everyone who calls on the name of the Lord will be saved." Romans 10:12
"For all have sinned and fall short of the glory of God, and are
justified freely by his grace through the redemption that came by Christ
Jesus." Romans 3:23-4

SVD with complex numbers

I'm working on creating a SVD class using complex numbers. I have an adaptation of the Jama ( http://math.nist.gov/javanumerics/jama/ ) implementation coded which works great with complex numbers with only a real part, but fails when the imaginary is present. I also coded up a port of numerical recipes' ( http://www.nr.com ) implementation, but am unable to get it to converge. I'm 99.9% sure that the problem does not exist in my complex number class as it has worked fine up until now.
Anyhow, what I'm wondering is if anyone has a Java SVD for complex matrices that I could look at and/or use?
Thanks in advance,
m

It wasn't working when I tried it a few months ago. I found the bug in the database - it's been long-standing. Given that Sun doesn't appear to be supporting Java3D very well, I doubt it'll ever be fixed.
Besides, that SVD algorithm is only for real matricies, I believe. - MOD

All my Numbers and Pages files unable to open on iPad and iCloud

It looks like all of my Pages and Numbers files from my iPad have been lost by iCloud? I don't use these apps often, but now when I launch them, all of my files have an upwards arrow icon in the upper right corner. When I select any file, the arrow goes away in under a minute, but the file never opens. When I try to access the files from iCloud.com from my MacBook, it says "Spreadsheet can't be downloaded. Please try again." What happened to my files!!!! I can open the "Getting Started" help files in each app.
My iPad is set up to backup Documents & Data to iCloud. The Storage & Backup options say I have 1.9 GB out of 5GB available. When I go into Manage Storage, it says I am using 5.1 MB for Numbers and 3.6 MB for Pages. When I drill down on each, it lists all of my files that won't open.
I can open my Keynote files from iCloud and my iPad. These do not show the arrow on the files. Reading through help files, the arrow seems to indicate that the file needs to be uploaded to iCloud? Turning off wifi on the iPad does not affect how this works. Force closing the apps and rebooting have no effect.
Any ideas? Is this an Apple bug or a confusing new feature of iCloud?

well, did the test again.. created on the iPad : see screenshot and date. Don't see any document preview.
Also opened all documents on iPad... same result.

Is this a bug in Numbers?

Hi,
I have recently finished my spreadsheet for personal finance tracking, and have just encountered what may be a bug in numbers.
I have a few sheets in which i collect the relevant data to be used by the appropriate functions.
This is what I have noticed.
In one sheet I have spending categories in column 1, and the relevant months in the top row. I have used the SUMIFS function to total transactions by category and month. I wrote the first row of functions and when I was done I merely copied and pasted the functions into the adjacent rows since they are exactly the same, the only variable being the spending category, which I allowed for.
I have about 10 categories and they all work perfect except for two rows. I find this very unusual since I have copied and pasted the functions, so no room for error, and not only that, all the other rows work perfect - just these two rows don't do the job. Also, it does not give the error sign (the red triangle with the exclamation mark), but the cells simply return the value $0.00. I even re-wrote the functions to try a different method other than and copied version of the function, but I can't get the values to display correctly in the cells.
Anyways, I just thought that if there is someone else that is encountering the same problem it would be nice to know.
Thanks
ST

Hello
At last I have responded to the 50 mails received and finished what I had to do in the garden.
I wish to add that when something doesn't behave as we wish, 99.99% of times, it's because we made a typo.
Here is a list of common ones :
(1) Extraneous spaces
(2) Unwanted duplicated chars
(3) unwanted or missing parenthesis (or double quotes)
(4) Error with the parameters separator (semi-colon versus comma)
(5) add you own common ones
Case 3 is quite easy to identify because most of the times, it generates a syntax error.
Case 4 is easier to identify because, as far as I know, it always generates a syntax error.
I apologizes but I can't describe Case 5's behaviour
Case 1 and 2 are the more annoying because they may give a formula returning a wrong value without any kind of error message.
It may be a good idea to keep this list near your machine.
Yvan KOENIG (VALLAURIS, France) vendredi 26 mars 2010 18:09:36

OWB bugs, missing functionality and the future of OWB

I'm working with OWB for some time now and there are a lot of rough edges to discover. Functionality and stability leave a lot to be desired. Here's a small and incomplete list of things that annoy me:
Some annoying OWB bugs (OWB 10g 10.1.0.2.0):
- The debugger doesn't display the output parameters of procedures called in pre-mapping processes (displays nothing, treats values as NULL). The mapping itself works fine though.
- When calling selfmade functions within an expression OWB precedes the function call with a constant "Functions." which prevents the function from being executed and results in an error message
- Occasionally OWB cannot open mappings and displays an error message (null pointer exception). In this case the mapping cannot be opened anymore.
- Occasionally when executing mappings OWB doesn't remember changes in mappings even when the changes were committed and deployed
- When using aggregators in mappings OWB scrambles the order of the output attributes
- The deployment of mappings sometimes doesn't work. After n retries it works without having changed anything in the mapping
- When recreating an external table directly after dropping the table OWB recreates the external table but always displays both an error message and a success message.
- In Key Lookups the screen always gets garbled when selecting an attribute as a join condition
- Usage of constants results in aborts in the debugger
- When you reconcile a table used in a key lookup the lookup condition sometimes changes. OWB seems to remember only the position of the lookup condition attribute but not the name.
- In the process of validating a mapping often changes in the mapping get lost and errors occur like 'Internal Errors' or 'Null Pointer Exceptions'.
- When you save the definition of external tables OWB always adds 2 whitespace columns to the beginning of all the lines following 'ORGANISATION EXTERNAL'. If you save a lot of external table definitions you get files with hundreds of leading whitespaces.
Poor or missing functionality:
- No logging on the level of single records possible. I'd like the possibility to see the status of each single record in each operator like using 'verbose data' in PowerCenter
- The order of the attributes cannot be changed. This really pisses me off expecially if operators like the aggregator scramble the order of attributes.
- No variables in expressions possible
- Almost unusable lookup functionality (no cascading lookups, no lookup overrides, no unconnected lookups, only equal condition in key lookups)
- No SQL overrides in soruces possible
- No mapplets, shared containers or any kind a reusable transformations
- No overview functionality for mappings. Often it's very hard to find a leftover operator in a big mapping.
- No copy function for attributes
- Printing functionality is completely useless
- No documentation functionality for mappings (reports)
- Debugger itself needs debugging
- It's very difficult to mark connections between attributes of different operations. It's almost impossible to mark a group of connections without marking connections you don't want to mark.
I really wonder which of the above bugs and mssing functionality 'Paris' will address. From what I read about 'Paris' not many if at all. If Oracle really wants to be a competitor (with regard to functionality) to Informatica, IBM/Ascential etc. they have a whole lot of work to do or purchase Informatica or another of the leading etl tool
vendors.
What do you think about OWB? Will it be a competitor for the leading etl tools or just a cheap database add on and become widely used like SAB BW not for reasons of technology or functionality but because it's cheap?
Looking forward to your opinions.
Jörg Menker

Thanks to you two for entertaining my thoughts so far. Let me respond to you latest comments.
Okay, lets not argue which one is better.. when a tool is there .. then there are some reasons to be there...But the points raised by Jorg and me are really very annoying. Overall I agree with both yours and Jorg's points (and I did not think it was an argument...merely sharing our observations with each other (;^)
The OWB tool is not as mature as Informatica. However, Informatica has no foothold in the database engine itself and as I mentioned earlier, is still "on the outside looking in..." The efficiency and power of set-based activity versus row-based activity is substantial.
Looking at it from another way lets take a look at Microstrategy as a way of observing a technical strategy for product development. Microstrategy focused on the internals (the engine) and developed it into the "heavy-lifting" tool in the industry. It did this primarily by leveraging the power of the backend...the database and the hosting server. For sheer brute force, it was champion of the day. It was less concerned with the pretty presentation and more concerned with getting the data out of the back-end so the user didn't have to sit there for a day and wait. Now they have begun to focus on the presentation part.
Likewise this seems to be the strategy that Oracle has used for OWB. It is designed around the database engine and leverages the power of the database to do its work. Informatica (probably because it needs to be all things to all people) has tended to view the technical offerings of the database engine as a secondary consideration in its architectural approach and has probably been forced to do so more now that Oracle has put themselves in direct competition with Informatica. To do otherwise would make their product too complex to maintain and more vendor-specific.
I am into the third data warehousing/data migration project and my previous two have been on Informatica (3 years on it).I respect your experience and your opinions...you are not a first timer. The tasks we have both had to solve and how we solved them with these tools are not necessarily the same. Could be similar in instances; could be quite different.
So the general tendency is to evaluate the tool and try to see how things that were needed to be done in my previous projects can be done with this tool. I am afraid to say .. I am still not sure how these can be implemented in OWB. The points raised by us are probably the fall out of this deficiency.One observation that I would make is that in my experience, calls to the procedural language in the database engine have tended to perform very poorly with Informatica. Informatica's scripting language is week. Therefore, if you do not have direct usability of a good, strong procedural language to tackle some complicated tasks, then you will be in a pickle when the solution is not well suited to a relational-based approach. Informatica wants you to do most things outside of the database (in the map primarily). It is how you implement the transformation logic. OWB is built entirely around the relational, procedural, and ETL components in the Oracle database engine. That is what the tool is all about.
If cost is the major factor for deciding a tool then OWB stands far ahead...Depends entirely on the client and the situation. I have implemented solutions for large companies and small companies. I don't use a table saw to cut cake and I don't use a pin knife to fall trees. Right tool for the right job.
...thats what most managers do .. without even looking how in turn by selecting such a tool they make the life tough for the developers.Been there many times. Few non-technical managers understand the process of tool evaluation and selection and the value a good process adds to the project. Nor do they understand the implications of making a bad choice (cost, productivity, maintainability).
The functionality of OWB stands way below Informatica.If you are primarily a GUI-based implementer that is true. However, I have often found that when I have been brought in to fix performance problems with Informatica implementations that the primary problem is usually with the way that the developer implemented it. Too often I have found that the developer understands how to implement logic in the GUI component (the Designer/Maps and Sessions) with a complete lack of understanding of how all this activity will impact load performance (they don't understand how the database engine works.) For example, a strong feature in Informatica is the ability to override the default SQL statement generated by Informatica. This was a smart design decision on Informatica's part. I have frequently had to go into the "code" and fix bad joins, split up complex operations, and rip out convoluted logic to get the maps to perform within a reasonable load window. Too often these developers are only viewing the problem through the "window" of the tool. They are not stepping back and look at the problem in the context of the overall architecture. In part Informatica forces them to do this. Another possible factor is they probably don't know better.
"One tool...one solution"
Microstrategy until recently had been suffering from that same condition of not allowing the developer to create the actual query). OWB engineers need to rethink their strategy on overriding the SQL.
The functionality of OWB stands way below Informatica.In some ways yes. If you do a head-to-head comparison of the GUI then yes. In other ways OWB is better (Informatica does not measure up when you compare it with all of the architectural features that the Oracle database engine offers). They need to fix the bugs and annoyances though.
.. but even the GUI of Informatica is better than OWB and gives the developer some satisfaction of working in it.Believe me I feel your pain. On the other hand, I have suffered from Informatica bugs. Ever do a port from one database eingine to another just to have it convert everything into multi-byte? Ever have it re-define your maps to parallel processing threads when you didn't ask it to?
Looking at the technical side of things I can give you one fine example ... there is no function in Oracle doing to_integer (to_number is there) but Informatica does that ... Hmm-m-m...sorry, I don't get the point.
The style of ETL approach of Informatica is far more appealing.I find it unnecessarily over-engineered.
OWB has two advantages : It is basically free of cost and it has a big brother in Oracle.
It is basically free of cost...When you are another "Microsoft", you can throw your weight around. The message for Informatica is "don't bite the hand that feeds you." Bad decisions at the top.
Regards,
Dan Phillips

Complex Numbers problem

I am having problems getting this Complex Numbers program to work correctly. i want to display using format a+bi the addition, subtraction and multiplication of 2 complex numbers.Can anyone reply today?
class Complex
     private double realPart, imaginaryPart;
     public Complex()
          realPart = 0.0;
          imaginaryPart = 0.0;
     public static void main(String [] args)
          Complex c;
          double res;
          c = new Complex();
          Screen.message("-------------------MENU----------------------------");
          Screen.newline(2);
          Screen.message("Please enter a number: ");
          Keyboard.readDouble();
          res = c.get_realPart();
          Screen.newline();
          Screen.message("Please enter a second number: ");
          Keyboard.readDouble();
          res = c.get_imaginaryPart();
          Screen.newline(2);
          Screen.message("--------------------------------------------------");
          Screen.newline();
          Screen.message("     Designed by Niall Magner               ");
          Screen.newline();
          Screen.message("--------------------------------------------------");
          Screen.newline(2);
          Screen.writedouble(res);
          Screen.newline();
          Screen.writedouble(res);
          Screen.newline();
          Screen.writedouble(res);
          Screen.newline(2);
     public double get_realPart()
          return realPart;
     public double get_imaginaryPart()
          return imaginaryPart;
     public void addComplexNum(Complex n1, Complex n2)
          realPart = n1.get_realPart() + n2.get_realPart();
          imaginaryPart = n1.get_imaginaryPart() + n2.get_imaginaryPart();
          Screen.message("-----------------------------------------------");
          Screen.newline(2);
          Screen.message("Number 1 is: " + realPart);
          Screen.message(" + " + imaginaryPart + "i");
          Screen.newline();
          Screen.message("Number 2 is: " + realPart);
          Screen.message(" + " + imaginaryPart + "i");
          Screen.newline();
          Screen.message("-----------------------------------------------");
          Screen.newline(2);
     public void subtractComplexNum(Complex n1, Complex n2)
          realPart = n1.get_realPart() - n2.get_realPart();
          imaginaryPart = n1.get_imaginaryPart() - n2.get_imaginaryPart();
          Screen.message("-----------------------------------------------");
          Screen.newline(2);
          Screen.message("Number 1 is: " + realPart);
          Screen.message(" - " + imaginaryPart + "i");
          Screen.newline();
          Screen.message("Number 2 is: " + realPart);
          Screen.message(" - " + imaginaryPart + "i");
          Screen.newline();
          Screen.message("-----------------------------------------------");
          Screen.newline(2);
     public void multiplyComplexNum(Complex n1, Complex n2)
          realPart = n1.get_realPart() * n2.get_realPart();
          imaginaryPart = n1.get_imaginaryPart() * n2.get_imaginaryPart();
          Screen.message("-----------------------------------------------");
          Screen.newline(2);
          Screen.message("Number 1 is: " + realPart);
          Screen.message(" * " + imaginaryPart + "i");
          Screen.newline();
          Screen.message("Number 2 is: " + realPart);
          Screen.message(" * " + imaginaryPart + "i");
          Screen.newline();
          Screen.message("-----------------------------------------------");
          Screen.newline(2);
Any help greatly appreciated.
Niall Magner

There are several problems with this code. You never call the add method, so the numbers are never going to be added. You never load up a complex number to add either.
Try doing something a bit more like this:
read a float from the keyboard
read another float from the keyboard
Create a complex number from this float
Complex complex1 = new Complex();
complex1.realPart = first number from above;
complex1.imaginaryPart = second number from above;
do this again to get the second complex number
then add the numbers together
Complex complexSum = new Complex
complexSum.addComplexNum(complex1, complex2)
print complexSum.realPart + "+i" + complexSum.imaginaryPart;
then do the other operations you wantI would also advise that you take a course in Java Programming, cos the code you have posted is truely awful.

How do I write complex numbers to an excel or text spreadsheet file.

I am performing an FFT on 3 channels of simultaneous analog input. I want to write the resultant 3 complex numbered arrays to a spreadsheet. Do I have to seperate the a and b*i components into r and theta and write two columns per array or is there a better way?

Perhaps you can write it as a String..?
Khalid

Need urgent help in a simple java program that adds up even numbers and..

The task is to write a program that allows the user to enter 8 integers and then displays the sum of the odd integers and the product of the even integers
what i did so far is
public class Computation
private int n;
private int even;
private int odd;
public Computation()
even =0;
odd = 1;
public Computation(int num1, int num2, int num3,int num4,int num5,int num6,int num7, int num8)
n = num1;
n = num2;
n = num3;
n = num4;
n = num5;
n = num6;
n = num7;
n = num8;
for(int i=0; i<=n; i++)
if(n%2 == 0)
even += n;
else
odd *=n;
public int getEven(int n)
return even;
public int getOdd()
return odd;
import java.util.*;
public class Tester
public static void main(String [] args)
System.out.println("Enter any three words");
Scanner input = new Scanner(System.in);
int num1 = input.nextInt();
int num2 = input.nextInt();
int num3 = input.nextInt();
int num4 = input.nextInt();
int num5 = input.nextInt();
int num6 = input.nextInt();
int num7 = input.nextInt();
int num8 = input.nextInt();
Computation compute = new Computation(num1, num2, num3, num4, num5, num6, num7, num8);
System.out.println("The Summation of the even numbers is: " + compute.getEven( ) + "\n" +"The product of the odd numbers is: " + compute.getOdd());
}The result i get is always zero.. however, i think the problem lies in the first class when i constructed the numbers and sat them all to one object "n",
i need help in fixing this bug,,
thanks

7uSamx wrote:
Can you illustrate by a small example please ?Any small example would already contain pretty much the entire code.
You know how to declare a method, right? You have several in your code, so I assume you do.
You already know how to check if a given variable is even or odd. You already showed that code, so I assume you do.
Now put those two together and you'll have a method that decides if the value passed to it is even or odd.
Now put the desired action in each of the branches of the if-statement and you're almost done.
Now call the method with each method from your constructor and you're done.

HP35s complex numbers

My background is with the HP41C,CV,CX (41). I am now attempting to emulate routines I developed for the 41 for solutions on an HP35s (35) in RPN mode. My issue is with polar to rectangular conversion on the 35. The 41 had P-R and R-P keys. The 35 does not and wants to handle the conversion as “complex numbers”.The 41 key sequence is:RENTϴ (value)P-R X appears in x (stack) registerY appears in y (stack) registerThe stack contains two discrete values, x, y The 35 sequence is:Display .0Rϴ (key)ϴ (value)ENTx and y appear as x i y in the x registerCan I segregate x and y to complete the next 41 step? The next step in the 41 routine is Σ+.That operation generates cumulative Cartesian coordinates for each subsequent entry of R, ϴ in the Σx and Σy statistic registers Can that be emulated in the 35s?

My background is with the HP41C,CV,CX (41). I am now attempting to emulate routines I developed for the 41 for solutions on an HP35s (35) in RPN mode. My issue is with polar to rectangular conversion on the 35. The 41 had P-R and R-P keys. The 35 does not and wants to handle the conversion as “complex numbers”.The 41 key sequence is:RENTϴ (value)P-R X appears in x (stack) registerY appears in y (stack) registerThe stack contains two discrete values, x, y The 35 sequence is:Display .0Rϴ (key)ϴ (value)ENTx and y appear as x i y in the x registerCan I segregate x and y to complete the next 41 step? The next step in the 41 routine is Σ+.That operation generates cumulative Cartesian coordinates for each subsequent entry of R, ϴ in the Σx and Σy statistic registers Can that be emulated in the 35s?

HP 39gII BUG: complex numbers and powers

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