thanx gkokovidis that works just one more thing: when i'm solving for for example the Second question which was : int(5*sec(2*x)^2, x) Maple gives the solution as : (5/2)*sin(2*x)/cos(2*x) it's correct but final solution in this case had to be : 5/2*tan(2*x) how can i get Maple to show that solution instead of the first one? thanx in advance