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Question Number 141362 by cesarL last updated on 17/May/21

$$\int sen\left(2\theta \right){cos}^4\left(2\theta \right)d\theta$$

Answered by bemath last updated on 17/May/21

$$\int \cos {}^4\left(2\theta \right)\sin \left(2\theta \right)d\theta =$$$$-\frac{1}{2}\int \cos {}^4\left(2\theta \right)d\left(\cos 2\theta \right)=$$$$-\frac{1}{10}\cos {}^5\left(2\theta \right)+c$$

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