TRIGEXPAND FUNCTION

[toml_12953]

(12-14-2022 09:10 PM)G. Cook Wrote:  in the Manual and in the Prime "Help" feature, "trigexpand" is shown to expand sin(3*x) into (4*cos(x)^2-1)*sin(x). However on my G2 version 2021 12 02, and in the emulator, trigexpand" merely repeats the input function, sin(3*x). I've tried changing various items in the CAS settings to no avail. What am I doing wrong??

It works on mine. Here are the settings I use