If ∫fxlogcosxdx = - loglogcosx +&nbs

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 Multiple Choice QuestionsMultiple Choice Questions

181.

cosx + xsinxx2 cosxdx is equal to

  • logsinx1 + cosx + c

  • logsinxx + cosx + c

  • log2sinxx + cosx + c

  • logxx + cosx + c


182.

The integral 012sin-1x2xdx equals

  • 0π6xdxtanx

  • 0π62tanxdx

  • 0π22xdxtanx

  • 0π62xsinxdx


183.

If 0af2a - xdx = m and 0afxdx = n, then 02afxdx is equal to

  • 2m + n

  • m + 2n

  • m - n

  • m + n


184.

- 100100fxdx is equal to

  • - 100100fx2dx

  • - 100100f- x2dx

  • - 100100f1xdx

  • - 100100f- xdx


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185.

- 11ex3 + e- x3ex - e- xdx is equal to

  • e22 - 2e

  • e2 - 2e

  • 2(e2 - e)

  • 0


186.

dxx + 1x is equal to

  • tan-1x + C

  • 2tan-1x + C

  • 2tan-1x + C

  • tan-1x32 +C


187.

logxx2dx is equal to

  • logxx + 1x2 + C

  • - logxx + 2x + C

  • - logxx - 12x + C

  • - logxx - 1x + C


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188.

If fxlogcosxdx = - loglogcosx + C, then f(x) is equal to

  • tanx

  • sinx

  • - cosx

  • - tanx


A.

tanx

fxlogcosxdx = - loglogcosx + CDifferentiatip.g on both sides w.r.t. x, ddxfxlogcosx dx                        = - ddxloglogcosx + ddxC fxlogcosx = - 1logcosx . 1cosx . - sinx + 0 fxlogcosx = tanxlogcosx             fx = tanx


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189.

xsin-1x1 - x2dx is equal to

  • x - sin-1x + C

  • x - 1 - x2sin-1x + C

  • x + sin-1x + C

  • x + 1 - x2sin-1x + C


190.

4ex - 6e- x9ex - 4e- xdx is equal to

  • 32x + 3536log9e2x - 4 + C

  • 32x - 3536log9e2x - 4 + C

  • - 32x + 3536log9e2x - 4 + C

  • - 52x + 3536log9e2x - 4 + C


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