Hi all!

I am _not_ the mathematician so I need some help for following function I found in the CAS examples.

SIN(X)^2On the emulated HP40 with CAS version 4 (4/27/2000) I get this result too (after TAN2SC and EXPAND). But if I plot this function it shows a square wave between 1 and -1.

------------

COS(X)TAN(X)

---------------------- = 1

_ +------------------

|/ SIN(X)COS(X)TAN(X)

Question: CAS does not respect the sign?

Ciao.....Mike