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Solve with x under fraction bar = FALSE

Discuss issues related to the Casio Basic Language
Junior Member
Posts: 2
Joined: Tue Nov 21, 2017 9:51 am
Calculators: Casio fx-9750 G II, Casio Classpad fx-cp400

Solve with x under fraction bar = FALSE

Postby NewCoder » Tue Nov 21, 2017 10:02 am

Hello,
I tried to write a program which uses the solve function with an function entered by the user. It looks like this:
Code: Select all
Input  a,"Function f(x)"
diff(a,x,1)->b
solve(b=0,x)->z
Print z


The result is, that it prints 'FALSE', but only if I use examples with an x under the fraction bar. My example function was (3x^7-x)/(x^2).

Has anybody an idea what I can do to get the right answer?

EDIT: It has do do something with diff, because if I use solve on the function before calculating with it, it works.
An error occurs which says "wrong argument type".

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