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The value of int(1+logx)/(sqrt((x^(x))^...

The value of ` int(1+logx)/(sqrt((x^(x))^(2)-1))dx " is " `

A

`sec^(-1)(x^(x))+c`

B

`tan^(-1)(x^(x))+c`

C

`log(x^(x)+sqrt(x^(2x)-1))+c`

D

`cot^(-1)(x^(x))+c`

Text Solution

Verified by Experts

The correct Answer is:
A

`I=int(x^(x)(1+logx))/(x^(x)sqrt((x^(x))^(2)-1))dx `
` "Let " x^(x)=t`
` :. xlogx=log t `
` implies (logx+1)dx=(1)/(t)dt `
` implies x^(x)(1+logx)dx=dt `
` :. I=int(1)/(tsqrt(t^(2)-1))dt `
`=sec^(-1)(t)=sec^(-1)(x^(x))+C`
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CENGAGE-INDEFINITE INTEGRATION-Exercise (Single)
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