ok, first of all, hi, semi-new poster here.  I recently got graph^3 for 
my TI-83+, meaning i can spend more time playing around with functions 
during my classes, but i have some trouble.  im not too much of a math 
guy, and i want to know how to convert a z=... function to a function 
that POV would understand.  can i just subtract a z from each side and 
have the function equal 0?  is that the way pov works it out?  im afraid 
i dont understand too much of the way POV does the math, so im at a loss 
here, and algebra wasnt my greatest subject (enjoyed geometry and trig 
tho,)  also, how would i make the sine of z in a z=... function, would 
it be z=arcsin(...) ?

thanks in advance for any help,
matt

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