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Does the indefinite integral $$ \int\left(\text{arccsc}[1+\sin^2x] +\arctan\dfrac {a \cos x}{1-a\sin x}-\text{arccot}\dfrac{\cos x}{a-\sin x }\right)dx$$

has any closed form expression ? ( here "$[]$" means greatest integer function )

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  • $\begingroup$ Where does this monster come from?! $\endgroup$ – vonbrand Feb 24 '14 at 17:42
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Note that $0 \le \sin^2 x \le 1$, and the extreme values are attained only at isolated points, so $\lfloor 1 + \sin^2 x \rfloor = 1$ for all intents and purposes here.

On the others I'd look for some of the standard trigonometric substitutions.

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