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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 PUBLICATION-INDEFINITE INTEGRATION-EXERCISES (Single Correct Answer Type)
  1. Evaluate: int((1+x^2)/(x^2-x^4))dx

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  2. int(sqrt(x^2+10 x+24))/(x+5)dx is equal to

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

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  4. "If "int x^(5)(1+x^(3))^(2//3)dx=A(1+x^(3))^(8//3)+B(1+x^(3))^(5//3)+c...

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  5. Evaluate: int(sin2x)/(sin^4x+cos^4x)dx

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  6. int(x+2)/((x^2+3x+3)sqrt(x+1))dx is equal to 1/3tan^(-1)(x/(sqrt(3(x+1...

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  7. Evaluate the following Integrals : int (sec x .dx)/(sqrt(sin (2x+A...

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  8. int(cos2x)/((e^(-x)+cosx)sqrt(1+sin2x))dx,x in(0,(pi)/(2)) is equal t...

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  9. I=int(cos4x+1)/(cotx-tanx)dx is equal to ?

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  10. If int(dx)/(x^2(x^n+1)^((n-1)/n))=-(f(x))^(1/n)+C then f(x) is (...

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  11. int sqrt((cosx-cos^3x)/(1-cos^3x))dx is equal to

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  12. intx(lna^(a^(x/2))/(3a^((5x)/2)b^(3x))+(lnb^(b^x))/(2a^(2x)b^(4x)))dx(...

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  13. int(3+2cosx)/((2+3cosx)^2)dx is equal to (a) ((sinx)/(3cosx+2))+c ...

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  14. "If " (d)/(dx)f(x)=f'(x), " then " int(xf'(x)-2f(x))/(sqrt(x^(4)f(x)))...

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  15. The value of the integral int((1-costheta)^(2/7))/((1+costheta)^(9/7))...

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  16. If int(dx)/(sqrt(sin^3xcos^5x))=asqrt(cotx)+bsqrt(tan^3)x+c , then a=-...

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  17. Ifint(dx)/(cos^3xsqrt(sin2x))=a(tan^2x+b)sqrt(tanx)+c ,t h e n a=(sq...

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  18. Evaluate: int dx/( (x + 2)(x^2 + 1) )

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  19. Ifint(3e^x-5e^(-x))/(4e^x+5e^(-x))dx=a x+bln(4e^x+5e^(-x))+C ,t h e n ...

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  20. If intf(x)sinxcosxdx=1/(2(b^2-a^2))lnf(x)+c ,then f(x) is equal to

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