Integration - Integrable Forms of Trigonometric Functions

Integration - Integrable Forms of Trigonometric Functions

Integrate the following expressions with respect to \(x\):

  1. \(\displaystyle\displaystyle \displaystyle\int 9\cos{(4x-1)}-3\sec^2{(2x+5)}\, \mathrm{d}x\)
  2. \(\displaystyle\displaystyle \displaystyle\int 2\sin{(6x+1)}+5\sec^2{(3x-2)}\, \mathrm{d}x\)
  3. \(\displaystyle\displaystyle \displaystyle\int 7\sin{(2-5x)}+11\sec^2{(4x+3)}\, \mathrm{d}x\)
  4. \(\displaystyle\displaystyle \displaystyle\int 4\cos{3x}+\sin{(2x-1)}-8\sec^2{5x}\, \mathrm{d}x\)

Solution:

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Answer:(a) \(\dfrac94\sin(4x-1)-\dfrac32\tan(2x+5)+C\) (b) \(-\dfrac13\cos(6x+1)+\dfrac53\tan(3x-2)+C\) (c) \(\dfrac75\cos(2-5x)+\dfrac{11}4\tan(4x+3)+C\) (d) \(\dfrac43\sin3x-\dfrac12\cos(2x-1)-\dfrac85\tan5x+C\)

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