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Integrate the following: int(dx)/(5-13...

Integrate the following:
`int(dx)/(5-13sinx)`
(ii) `int(dx)/(13+3cosx+4sinx)`
(iii) `int(dx)/(a^(2)-b^(2)cos^(2)x)(a^(2)gtb^(2))`
(iv) `int(dx)/(a^(2)-b^(2)cos^(2)x)(a^(2)ltb^(2))`
(v) `int(sin2x+sin4x-sin6x)/(1+cos2x+cos4x+cos6x)dx`

Text Solution

Verified by Experts

The correct Answer is:
`(1)/(12)ln|(5tan""(1)/(2)xx-25)/(5tan""(1)/(2)x-1)|+c`
`(1)/(6)tan^(-1)((5tan""(1)/(2)x+2)/(6))+c`
`(1)/(asqrt(a^(2)-b^(2)))tan^(-1)((a)/(sqrt(a^(2)-b^(2)))tanx)+c`
`(1)/(2asqrt(a^(2)-b^(2)))log[(atanx-sqrt(b^(2)-a^(2)))/(atanx+sqrt(b^(2)-a^(2)))]+c`
`(1)/(3)ln|sec3x|-(1)/(2)ln|sec2x|-ln|secx|+c`
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Knowledge Check

  • int(dx)/((sin^(2)x-4cos^(2)x))=?

    A
    `(1)/(4)log |(tanx-2)/(tanx+2)|+C`
    B
    `(1)/(4)log |(tanx+2)/(tanx-2)|+C`
    C
    `(1)/(4)log |(1-tan x)/(1+tanx)|+C`
    D
    None of these
  • int (dx)/((4sin^(2)x+5cos^(2)x))=?

    A
    `(1)/(2)tan^(-1)((tanx)/(sqrt(5)))+C`
    B
    `(1)/(sqrt(5))tan^(-1)((tanx)/(sqrt(5)))+C`
    C
    `(1)/(2sqrt(5))tan^(-1)((2tanx)/(sqrt(5)))+C`
    D
    None of these
  • int(1)/(cos2x+sin2x)dx=

    A
    `(1)/(2sqrt2)log[(sqrt2-1+tanx)/(sqrt2+1-tanx)]+c`
    B
    `(1)/(2sqrt2)log[(sqrt2+1+tanx)/(sqrt2)]+c`
    C
    `(1)/(sqrt2)log[(sqrt2-1+tanx)/(sqrt2+1-tanx)]+c`
    D
    `(1)/(2sqrt2)tan^(-1)[(1-tanx)/(sqrt2)]+c`
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