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If int (dx)/(2sin x+sec x)^(4)=At^(5)+B ...

If `int (dx)/(2sin x+sec x)^(4)=At^(5)+B t^(6)+Ct^(7)+k`, wher `t=(1+tan x)^(-1)`, then `A+B+C`=

A

`(-86)/(105)`

B

`(-1)/(105)`

C

`(-26)/(105)`

D

`(-16)/(105)`

Text Solution

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The correct Answer is:
D
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