alleryStart learning →Using parts with u = x, how does x sin x integrate?
A-x cos x + sin x + c
B-x cos x - sin x + c
Cx cos x - sin x + c
Dx sin x + cos x + c
Answer & Solution
Correct answer: A. -x cos x + sin x + c
By parts with u = x: -x cos x plus the integral of cos x, which is -x cos x + sin x.
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