Recent content by Nick_OCD

Thank you. I had a brain freeze on that one.

Hello All, My problem is to find the relative extrema of abs(sin 2x); 0< x < 2pi. I got the derivative right, I think: 2 cos 2x if x > 0, and -2 cos 2x if x < 0. However, the solution says that f ' (x) does not exist at x = pi/2, x = pi, and x = (3pi)/2. Glancing at my...