1.

The value of the integral `int(x^2+x)(x^(-8)+2x^(-9))^(1/(10))dx`is`5/(11)(x^2+2x)^((11)/(10))+c`(b) `5/6(x+1x)^((11)/(10))+c``6/7(x+1)^((11)/(10))+c`(d) none oftheseA. `(5)/(11)(x^(2)+2x)^(11//10)+c`B. `(5)/(6)(x+1)^(11//10)+c`C. `(6)/(7)(x+1)^(11//10)+c`D. none of these

Answer» Correct Answer - A
Given that
`I=int(x^(2)+x)(x^(-8)+2x^(-9))^(1//10) dx`
`=int (x+1)(x^(2)+2x)^(1//10)dx`
Now put `x^(2)+2x=t " and "(x+1)dx=(dt)/(2)`
` :. I=int t^(1//10)(dt)/(2)=(1)/(2)xx(10)/(11)t^(11//10)+C=(5)/(11)t^(11//10)+C`
` =(5)/(11)(x^(2)+2x)^(11//10)+C`


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