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If phi(x) = int(1//x)^(sqrtx) sin(t^2) d...

If `phi(x) = int_(1//x)^(sqrtx) sin(t^2) dt,` then `phi'(1)` is equal to

A

sin 1

B

2 sin 1

C

(1/2) sin 1

D

(3/2) sin 1

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The correct Answer is:
D
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