2cos-x-3-cos-2x-dx-

Question Number 33507 by MJS last updated on 18/Apr/18

\int \frac{2 \cos x}{3 - \cos 2 x} d x = ?

Answered by math1967 last updated on 18/Apr/18

\int \frac{2 c o s x}{3 - 1 + 2 {s i n}^{2} x} d x

\int \frac{2 c o s x}{2 (1 + {s i n}^{2} x)} d x

\int \frac{d (s i n x)}{1 + {s i n}^{2} x}

\tan^{- 1} s i n x + c

Commented by MJS last updated on 18/Apr/18

thank you

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