The correct evaluation of π0|sin4 x|dx is  [MP PET 1993]
Options:
A. 8π3
B. 2π3
C. 4π3
D. 3π8

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Answer: Option D
: D

π0|sin4x|dx=2π20sin4xdx
Applying gamma function,
2π20sin4xdx=2T(52).T(12)2.T(62)=3π8

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