Optimal. Leaf size=12 \[ e^x-3 \log \left (e^x+1\right ) \]
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Rubi [A] time = 0.0351896, antiderivative size = 12, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 2, integrand size = 16, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.125, Rules used = {2282, 43} \[ e^x-3 \log \left (e^x+1\right ) \]
Antiderivative was successfully verified.
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Rule 2282
Rule 43
Rubi steps
\begin{align*} \int \frac{e^x \left (-2+e^x\right )}{1+e^x} \, dx &=\operatorname{Subst}\left (\int \frac{-2+x}{1+x} \, dx,x,e^x\right )\\ &=\operatorname{Subst}\left (\int \left (1-\frac{3}{1+x}\right ) \, dx,x,e^x\right )\\ &=e^x-3 \log \left (1+e^x\right )\\ \end{align*}
Mathematica [A] time = 0.0103021, size = 12, normalized size = 1. \[ e^x-3 \log \left (e^x+1\right ) \]
Antiderivative was successfully verified.
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Maple [A] time = 0.02, size = 11, normalized size = 0.9 \begin{align*}{{\rm e}^{x}}-3\,\ln \left ( 1+{{\rm e}^{x}} \right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.00554, size = 14, normalized size = 1.17 \begin{align*} e^{x} - 3 \, \log \left (e^{x} + 1\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 0.770717, size = 30, normalized size = 2.5 \begin{align*} e^{x} - 3 \, \log \left (e^{x} + 1\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 0.092809, size = 10, normalized size = 0.83 \begin{align*} e^{x} - 3 \log{\left (e^{x} + 1 \right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.28569, size = 14, normalized size = 1.17 \begin{align*} e^{x} - 3 \, \log \left (e^{x} + 1\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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