Hi, how do I integrate cos^3(x)?
I split it into cos(x)[1/2(1+cos(2x)] and then removed the constant of a 1/2 from the integration. Then I mutilpied through by cos(x) and got cos(x)+cos^2(2x), which didn't really help.
Then I split cos^3(x) into cos(x).cos^2(x) tried substituting cos^2(x) with 1-sin^2(x) and that didn't help either.
What am I missing?
Thank you.
Out of curiosity, is there a method of solving this problem without using substitution. In the cousre I am doing substitution has already been covered so I am fine with that, but I am trying to get the big picture of integration and get a feel for as many techniques I can. Cheers