This ( http://www.wolframalpha.com/input/?i=integrate+cos^6+(x)+dx+from+0+to+pi/2 ) is the integral I am trying to evaluate.:
int cos^6 (x) dx from 0 to pi/2
(1 + cos(2x))/2 = cos^2 (x)
(1 – cos(2x))/2 = sin^2 (x)
sin^2 (x) + cos^2 (x) = 1
The Attempt at a Solution
My (typed-up) work is attached as MyWork.jpg.
I would greatly appreciate it if someone could tell me where I went wrong in my work!
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