Optimal. Leaf size=15 \[ \text{CannotIntegrate}\left (\frac{e^x}{x^2+e^x},x\right ) \]
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Rubi [A] time = 0.0392725, antiderivative size = 0, normalized size of antiderivative = 0., number of steps used = 0, number of rules used = 0, integrand size = 0, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0., Rules used = {} \[ \int \frac{e^x}{e^x+x^2} \, dx \]
Verification is Not applicable to the result.
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Rubi steps
\begin{align*} \int \frac{e^x}{e^x+x^2} \, dx &=\int \frac{e^x}{e^x+x^2} \, dx\\ \end{align*}
Mathematica [A] time = 0.0333633, size = 0, normalized size = 0. \[ \int \frac{e^x}{e^x+x^2} \, dx \]
Verification is Not applicable to the result.
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Maple [A] time = 0.028, size = 0, normalized size = 0. \begin{align*} \int{\frac{{{\rm e}^{x}}}{{{\rm e}^{x}}+{x}^{2}}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 0., size = 0, normalized size = 0. \begin{align*} x - \int \frac{x^{2}}{x^{2} + e^{x}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (\frac{e^{x}}{x^{2} + e^{x}}, x\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{e^{x}}{x^{2} + e^{x}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{e^{x}}{x^{2} + e^{x}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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