CAS and exponents issues

[parisse]

(10-03-2018 08:34 AM)sasa Wrote:  It would be definitely nice touch for simplification and factorization on last step.

For instance:
diff(((1+x^2)/2)*tan(x),x)

On Prime and online Xcas/Giac, returns:
(2*x/2)*tan(x)+((1+x^2)/2)*(1+tan(x)^2)

I do not insist on any of this, simply point some issues may confuse users, especially low grade students.

This is the choice made by TI, not mine. I am a teacher, I want students to learn something.