Integration - Integrable Forms of Trigonometric Functions

Integration - Integrable Forms of Trigonometric Functions

\(\displaystyle\displaystyle \displaystyle\int{\frac{1+\sin 3x}{\cos 3x}\mathrm{d}x}\)

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Answer:\(\frac13\ln|\sec3x+\tan3x|+\frac13\ln|\sec3x|+C\).

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