Optimal. Leaf size=4 \[ \tanh ^{-1}\left (e^x\right ) \]
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Rubi [A] time = 0.02, antiderivative size = 4, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.133, Rules used = {2249, 206} \[ \tanh ^{-1}\left (e^x\right ) \]
Antiderivative was successfully verified.
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Rule 206
Rule 2249
Rubi steps
\begin {align*} \int \frac {e^x}{1-e^{2 x}} \, dx &=\operatorname {Subst}\left (\int \frac {1}{1-x^2} \, dx,x,e^x\right )\\ &=\tanh ^{-1}\left (e^x\right )\\ \end {align*}
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Mathematica [A] time = 0.00, size = 4, normalized size = 1.00 \[ \tanh ^{-1}\left (e^x\right ) \]
Antiderivative was successfully verified.
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fricas [B] time = 0.40, size = 15, normalized size = 3.75 \[ \frac {1}{2} \, \log \left (e^{x} + 1\right ) - \frac {1}{2} \, \log \left (e^{x} - 1\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [B] time = 0.21, size = 16, normalized size = 4.00 \[ \frac {1}{2} \, \log \left (e^{x} + 1\right ) - \frac {1}{2} \, \log \left ({\left | e^{x} - 1 \right |}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.03, size = 4, normalized size = 1.00 \[ \arctanh \left ({\mathrm e}^{x}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [B] time = 1.37, size = 15, normalized size = 3.75 \[ \frac {1}{2} \, \log \left (e^{x} + 1\right ) - \frac {1}{2} \, \log \left (e^{x} - 1\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.13, size = 15, normalized size = 3.75 \[ \frac {\ln \left ({\mathrm {e}}^x+1\right )}{2}-\frac {\ln \left ({\mathrm {e}}^x-1\right )}{2} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [B] time = 0.11, size = 15, normalized size = 3.75 \[ - \frac {\log {\left (e^{x} - 1 \right )}}{2} + \frac {\log {\left (e^{x} + 1 \right )}}{2} \]
Verification of antiderivative is not currently implemented for this CAS.
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