Command 'coeff' (CAS Mode)

[komame]

(05-31-2024 08:24 PM)parisse Wrote:  coeff is meant to work on polynomials with respect to an identifier, not with respect to a subexpression. It will work only if the subexpression is written exactly the same way in an expression.
If you run b:=sin(x*2) then the answer is displayed according to autosimplify mode, but b is not autosimplified.

That's right. The syntax for the coeff in the help states that the second parameter should be [Var]. Moreover, setting the simplify parameter to 'None' in the CAS settings and repeating these operations explains everything. Thank you for the clarification.