Hello, I need help witht he following integral which has come up while trying to solve a differential equation.(adsbygoogle = window.adsbygoogle || []).push({});

[tex]

\int \frac{e^t}{cos^2(5t)}sin(6t)dt

[/tex]

I'm not sure it can be integrated analytically, I 've tried to think of possible trigonometric manipulations and integrating by parts ... but not leading anywhere, any help would be appreciated.

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# Help with integral

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