HP 49g+



#2

Hi all...

Can someone tell me please why when I enter:

DERVX(X^2)

I get 0 (zero)

I already set functions to symbolic and the
arithmetic mode is set to exact, what am I doing wrong?

thanks in advanced


#3

http://forums11.itrc.hp.com/service/forums/bizsupport/questionanswer.do?threadId=1310990

TW

#4

Check if variable X is defined and purge it. If X is defined, X^2 evaluates to a constant of which the derivative is zero.


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