Prove that r=0∑nnCrsinrxcos(n−r)x=2n−1sin(nx)˙

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Prove that {_{{{r}={0}}}^{{n}}}^{n}{C}_{{r}}{{{r}}}{x}{{{({n}-

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Prove that $r = 0 \sum n^{n} C_{r} sin r x cos (n - r) x = 2^{n - 1} sin (n x) ˙$

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Prove that

r = 0 \sum n^{n} C_{r} sin r x cos (n - r) x = 2^{n - 1} sin (n x) ˙

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Question Text

Prove that

r = 0 \sum n^{n} C_{r} sin r x cos (n - r) x = 2^{n - 1} sin (n x) ˙