> int(cos(3*theta)+sin(2*theta-3), x); = (cos(3 theta) + sin(2 theta - 3)) x The above is the wrong answer.Yet this is Maple gives me. I have followed your suggestion of using int instead of the integral sign from the palette. Curious

I have tried substition using Maple. It did not work out. I let u = 4x +3 and then differentiated.

When I integrate the following using Maple I dont get the right answer. Could you please show what I am doing wrong: (x -2)(2x + 3) I use the expression palette and inser the integration feature. Curious