alleryStart learning →With the double angle identity, cos^2 x integrates to what?
Ax/2 + sin 2x/2 + c
Bx/2 - sin 2x/4 + c
Ccos^3 x/3 + c
Dx/2 + sin 2x/4 + c
Answer & Solution
Correct answer: D. x/2 + sin 2x/4 + c
Use cos^2 x = (1 + cos 2x)/2, which integrates to x/2 + sin 2x/4.
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