> > > I have the expression sin(th)**2 and know that sin(th)**2 > 0 and I want > > sqrt( sin(th)**2) = sin(th). >
What you can do to get some simplification is to replace `th` with a real symbol: >>> var('th', real=1) th >>> sqrt(sin(th)**2) Abs(sin(th)) -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com. To unsubscribe from this group, send email to sympy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.