In Session 69 the worked example:
integral sin^4(x) cos^2(x) dx
I get a different result to the published answer.
In it they state:
integral cos^2(2x) dx = x/2 + sin(2x)/4 + c
This looks like a mistake: using a half angle equality would get a trig term of 4x
Has anyone done this example?

Question

In Session 69 the worked example: 
integral sin^4(x) cos^2(x) dx
I get a different result to the published answer.
In it they state:
integral cos^2(2x) dx = x/2 + sin(2x)/4 + c
This looks like a mistake: using a half angle equality would get a trig term of 4x
Has anyone done this example?

anonymous · Answer

Hope I help...

anonymous · Answer

Thanks Megatron0000. I agree with your explanation.