19.
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A. (p 3/256)cos(p /8) |
B. ( Ö 2/32)(p 2+8p -32) |
C. ( p 2/32)Ö 2 |
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D. ( Ö 2/32)(p 2-8p +32) |
E. ( p 3/384)(2-Ö 2) |
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Solution: The answer is B
To evaluate the above integral, integrate by parts, twice, as follows:

Apply the method of integration by parts to the integral in equation (1),

Combine the above two results, so that,
