\frac { \pi } { 2 } e ^ { x } ( \frac { 1 - \sin x } { 1 + \cos x } ) d x
Evaluate
\frac{\pi dx\left(-\sin(x)+1\right)e^{x}}{2\left(\cos(x)+1\right)}
Differentiate w.r.t. x
\frac{\pi de^{x}\left(-x\sin(2x)+2\cos(x)-\sin(2x)-2\sin(x)+2\right)}{4\left(\cos(x)+1\right)^{2}}
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