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If int (sqrtx)^5/((sqrtx)^7+x^6) dx= alo...

If `int (sqrtx)^5/((sqrtx)^7+x^6) dx= alog(x^k/(1+x^k))+c` then `a` and `k` are

A

`3`

B

`(4)/(25)`

C

`(25)/(4)`

D

`1`

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