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If varphi(x)=int(1/x)^(sqrt(x))sin(t^2)d...

If `varphi(x)=int_(1/x)^(sqrt(x))sin(t^2)dt` then `varphi^(prime)(1)=`
a. `sin1` b. `2sin1` c. `3/2sin1` d. `3sin1`.

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