Optimal. Leaf size=21 \[ e^{\frac {\left (5+\frac {1}{e^2}\right ) \left (-27+\frac {e^x x}{3}\right )}{x^2}} \]
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Rubi [A] time = 1.48, antiderivative size = 35, normalized size of antiderivative = 1.67, number of steps used = 1, number of rules used = 1, integrand size = 64, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.016, Rules used = {6706} \begin {gather*} \exp \left (-\frac {81 \left (1+5 e^2\right )-\left (1+5 e^2\right ) e^x x}{3 e^2 x^2}\right ) \end {gather*}
Antiderivative was successfully verified.
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Rule 6706
Rubi steps
\begin {gather*} \begin {aligned} \text {integral} &=\exp \left (-\frac {81 \left (1+5 e^2\right )-e^x \left (1+5 e^2\right ) x}{3 e^2 x^2}\right )\\ \end {aligned} \end {gather*}
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Mathematica [A] time = 0.66, size = 26, normalized size = 1.24 \begin {gather*} e^{\frac {\left (1+5 e^2\right ) \left (-81+e^x x\right )}{3 e^2 x^2}} \end {gather*}
Antiderivative was successfully verified.
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fricas [B] time = 0.69, size = 37, normalized size = 1.76 \begin {gather*} e^{\left (-\frac {{\left ({\left (2 \, x^{2} + 135\right )} e^{2} - {\left (5 \, e^{2} + 1\right )} e^{\left (x + \log \left (\frac {1}{3} \, x\right )\right )} + 27\right )} e^{\left (-2\right )}}{x^{2}} + 2\right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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giac [B] time = 0.33, size = 38, normalized size = 1.81 \begin {gather*} e^{\left (-\frac {27 \, e^{\left (-2\right )}}{x^{2}} + \frac {5 \, e^{\left (x + \log \left (\frac {1}{3} \, x\right )\right )}}{x^{2}} + \frac {e^{\left (x + \log \left (\frac {1}{3} \, x\right ) - 2\right )}}{x^{2}} - \frac {135}{x^{2}}\right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.09, size = 21, normalized size = 1.00
method | result | size |
risch | \({\mathrm e}^{\frac {\left ({\mathrm e}^{x} x -81\right ) \left (5 \,{\mathrm e}^{2}+1\right ) {\mathrm e}^{-2}}{3 x^{2}}}\) | \(21\) |
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.62, size = 30, normalized size = 1.43 \begin {gather*} e^{\left (\frac {e^{\left (x - 2\right )}}{3 \, x} + \frac {5 \, e^{x}}{3 \, x} - \frac {27 \, e^{\left (-2\right )}}{x^{2}} - \frac {135}{x^{2}}\right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 2.15, size = 33, normalized size = 1.57 \begin {gather*} {\mathrm {e}}^{-\frac {27\,{\mathrm {e}}^{-2}}{x^2}}\,{\mathrm {e}}^{\frac {5\,{\mathrm {e}}^x}{3\,x}}\,{\mathrm {e}}^{-\frac {135}{x^2}}\,{\mathrm {e}}^{\frac {{\mathrm {e}}^{-2}\,{\mathrm {e}}^x}{3\,x}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.33, size = 27, normalized size = 1.29 \begin {gather*} e^{\frac {\frac {x \left (1 + 5 e^{2}\right ) e^{x}}{3} - 135 e^{2} - 27}{x^{2} e^{2}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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