Proof In Exercises 6772, use integration by parts to prove the formula. (For Exercises
Chapter 8, Problem 68(choose chapter or problem)
In Exercises 67-72, use integration by parts to prove the formula. (For Exercises 67-70, assume that \(n\) is a positive integer.)
\(\int x^{n} \cos x d x=x^{n} \sin x-n \int x^{n-1} \sin x d x\)
Text Transcription:
n
int x^{n} cos x dx = x^{n} sin x - n int x^{n - 1} sin x dx
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