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. Prove that the following series is convergent. You may use the following fact: 2 sin() cos(a)=sin(a+)-sin(a). Carefully justify your answer. IM8 cos(n) n
. Prove that the following series is convergent. You may use the following fact: 2 sin() cos(a)=sin(a+)-sin(a). Carefully justify your answer. IM8 cos(n) n Hint: Look for a telescoping sum
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To prove that the series sum n 1 to cosnn is convergent we will use the given fact 2sin12 cosa sina ...
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An Introduction to Analysis
Authors: William R. Wade
4th edition
132296381, 978-0132296380
