CAS diff() giving incorrect results

[Wes Loewer]

(09-22-2021 07:26 PM)parisse Wrote:  I have already tried to make | work as you expect with diff, but that was not successfull, it's too complicated. Please use subst

Okay, thanks for that info. That's good to know.

Quote:or just parentheses like

Code:


diff(x^3,x,2)(x = 4)

That's an interesting notation. It appears to work for other functions as well. Is there any way to use it with primes? When I try (x^3)''(x = 4) it gives a warning and returns (6*x) = 24, with the expression on the left and the result on the right. Is this the intended behavior?