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Let f(x)=(9^(x))/(9^(x)+3) Let h(x)=in...

Let `f(x)=(9^(x))/(9^(x)+3)`
Let `h(x)=intf(x)dx`. If `h(log_(9)6)=1`, then `h(x)=`

A

`ln (9^(x)+3)`

B

`log_(6)(9^(x)+3)`

C

`(log_(6)(9^(x)+3))/(ln9)`

D

`log_(9)(9^(x)+3)`

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