Optimal. Leaf size=11 \[ \text{CannotIntegrate}\left (e^{e^{e^{e^x}}},x\right ) \]
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Rubi [A] time = 0.0463063, 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 = {} \[ \int e^{e^{e^{e^x}}} \, dx \]
Verification is Not applicable to the result.
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Rubi steps
\begin{align*} \int e^{e^{e^{e^x}}} \, dx &=\operatorname{Subst}\left (\int \frac{e^{e^{e^x}}}{x} \, dx,x,e^x\right )\\ \end{align*}
Mathematica [A] time = 0.019356, size = 0, normalized size = 0. \[ \int e^{e^{e^{e^x}}} \, dx \]
Verification is Not applicable to the result.
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Maple [A] time = 0.016, size = 0, normalized size = 0. \begin{align*} \int{{\rm e}^{{{\rm e}^{{{\rm e}^{{{\rm e}^{x}}}}}}}}\, 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*} \int e^{\left (e^{\left (e^{\left (e^{x}\right )}\right )}\right )}\,{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 (e^{\left (e^{\left (e^{\left (e^{x}\right )}\right )}\right )}, 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 e^{e^{e^{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 e^{\left (e^{\left (e^{\left (e^{x}\right )}\right )}\right )}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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