Verify integration formula (2) in Example I. Sec. 136. by
Chapter 0, Problem 12.5(choose chapter or problem)
Verify integration formula (2) in Example I. Sec. 136. by differentiating the right-hand side there with respect to if;. Suggestion: The trigonometric identities ' l/J l + cos l/J . ' l/J - cos l/J cos- -., = ., sm--= ., ----., arc useful in this verification.
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