bigfooted

trigreduce gives malformed property list error

trigsimp/trigonometricp fails with pderivop

quotient by polynomial of higher degree

VOTE: maxima

solve sometimes gives wrong solution when using ratvars

solve gives error for certain systems of underdetermined equations

I'm sorry, I see that in my reply I said variables a,b,c, which is not what I meant....

I understand what is going on, I just do not think that code that comes with maxima...