"Let " I(n)=int tan^(n)x dx,(n gt 1). I(...

`"Let " I_(n)=int tan^(n)x dx,(n gt 1). I_(4)+I_(6)=a tan^(5)x+bx^(5)+C, " where C is a constant of integration, then the ordered pair (a,b) is equal to "`

A

`(-(1)/(5),0)`

B

`(-(1)/(5),1)`

C

`((1)/(5),0)`

D

`((1)/(5),-1)`

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The correct Answer is:

C

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