Integrand size = 10, antiderivative size = 28 \[ \int \frac {e^x}{1+\cos (x)} \, dx=(1-i) e^{(1+i) x} \operatorname {Hypergeometric2F1}\left (1-i,2,2-i,-e^{i x}\right ) \]
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Time = 0.03 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {4542, 4536} \[ \int \frac {e^x}{1+\cos (x)} \, dx=(1-i) e^{(1+i) x} \operatorname {Hypergeometric2F1}\left (1-i,2,2-i,-e^{i x}\right ) \]
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Rule 4536
Rule 4542
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \int e^x \sec ^2\left (\frac {x}{2}\right ) \, dx \\ & = (1-i) e^{(1+i) x} \operatorname {Hypergeometric2F1}\left (1-i,2,2-i,-e^{i x}\right ) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 28, normalized size of antiderivative = 1.00 \[ \int \frac {e^x}{1+\cos (x)} \, dx=(1-i) e^{(1+i) x} \operatorname {Hypergeometric2F1}\left (1-i,2,2-i,-e^{i x}\right ) \]
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\[\int \frac {{\mathrm e}^{x}}{\cos \left (x \right )+1}d x\]
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\[ \int \frac {e^x}{1+\cos (x)} \, dx=\int { \frac {e^{x}}{\cos \left (x\right ) + 1} \,d x } \]
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\[ \int \frac {e^x}{1+\cos (x)} \, dx=\int \frac {e^{x}}{\cos {\left (x \right )} + 1}\, dx \]
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\[ \int \frac {e^x}{1+\cos (x)} \, dx=\int { \frac {e^{x}}{\cos \left (x\right ) + 1} \,d x } \]
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\[ \int \frac {e^x}{1+\cos (x)} \, dx=\int { \frac {e^{x}}{\cos \left (x\right ) + 1} \,d x } \]
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Timed out. \[ \int \frac {e^x}{1+\cos (x)} \, dx=\int \frac {{\mathrm {e}}^x}{\cos \left (x\right )+1} \,d x \]
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