Running PiecewiseExpand[expr, assum] does not work with all kind of assumptions. For example, the following line will not split the expression with absolute values in the chambers, considering m1=m2. ...
Is there a way to impose in mathematica an specific trigonometric expansion with TrigExpand? I have various double-angle expressions for cosine and sine in my ...
I'm trying to make Mathematica do some simplifications for me. I have the expression ((1 + s) (-1 + s) )/(-1 + s s) and want to simplify this with ...