Grapher utility issues (Lion's fault?)

I'm having trouble with the Grapher utility and defining/graphing functions. If I define a function, say f(x) = x^2, and then try to graph a transformation of it, say y=f(x-2), Grapher displays only a graph of y = f(x). All transssformations within the function yield the same results; and transformations outside of the function behave as they should.
I am not sure if this is an issue with Lion, but I only saw the problem after I updated. Prior to that, there were no problems.
Thanks,
Jarrod

Hi,
  Defining a function in Grapher 2.2 : the variable must not be  x  y   r   theta (never use 2D coodinates) ; tried now on a MacBook Pro 15" Lion Grapher 2.2.
  Defining a function in Grapher 2.1 : the variable may be  x  y   r   theta (you may use 2D coodinates) ; tried now on a iMac 20" early 2006 Snow Leopard Grapher 2.1.
  In your example use    f(t) = t^2   and    get correct curves   y = f(x)   and   y = f(x-2)
  It's new but not a bug. Is this change useful ? I must say functions look now quite different from curves equations.
  So long,
   YB24

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    In the interest of providing a complete picture, I would say I have thought quite a lot about whether noise is a problem. This base station is installed in a lab, with lots of electrical equipment whirring away and to make matters worse, the base station itself needed to be installed right next to (Within inches) a circuit breaker box. I winced when I did this.
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    Michael

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