In Exercise 13, you evaluated - sin2 d using integrationby parts. (If you did not do it
Chapter 7, Problem 52(choose chapter or problem)
In Exercise 13, you evaluated - sin2 d using integrationby parts. (If you did not do it by parts, do sonow!) Redo this integral using the identity sin2 =(1 cos 2)/2. Explain any differences in the form ofthe answer obtained by the two methods.
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