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int (7x^(8)+8x^(7))/((1+x+x^(8))^(2))dx=...

`int (7x^(8)+8x^(7))/((1+x+x^(8))^(2))dx=f(x)+c rArr f(x)=`

A

`x^(8)/(1+x+x^(8))`

B

`28log(1+x+x^(8))`

C

`1/(1+x+x^(8))`

D

`-1/(1+x+x^(8))`

Text Solution

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The correct Answer is:
A
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