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If a be a positive integer, the number o...

If a be a positive integer, the number of values of a satisfying
`int_0^(pi//2) [a^2 ((cos 3x)/(4) + 3/4 "cos" x) + a sin x - 20 cos x] dx le - (a^2)/3` is

A

only one

B

two

C

three

D

four

Text Solution

Verified by Experts

The correct Answer is:
D
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