Optimal. Leaf size=204 \[ -\frac {x^2}{\sqrt {3} \left (3 i-\sqrt {3}\right )}+\frac {x^2}{\sqrt {3} \left (3 i+\sqrt {3}\right )}-\frac {2 x \log \left (1+\frac {2 e^x}{3-i \sqrt {3}}\right )}{\sqrt {3} \left (3 i+\sqrt {3}\right )}+\frac {2 x \log \left (1+\frac {2 e^x}{3+i \sqrt {3}}\right )}{\sqrt {3} \left (3 i-\sqrt {3}\right )}-\frac {2 \text {Li}_2\left (-\frac {2 e^x}{3-i \sqrt {3}}\right )}{\sqrt {3} \left (3 i+\sqrt {3}\right )}+\frac {2 \text {Li}_2\left (-\frac {2 e^x}{3+i \sqrt {3}}\right )}{\sqrt {3} \left (3 i-\sqrt {3}\right )} \]
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Rubi [A]
time = 0.14, antiderivative size = 204, normalized size of antiderivative = 1.00, number of steps
used = 9, number of rules used = 5, integrand size = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.312, Rules used = {2295, 2215,
2221, 2317, 2438} \begin {gather*} -\frac {2 \text {PolyLog}\left (2,-\frac {2 e^x}{3-i \sqrt {3}}\right )}{\sqrt {3} \left (\sqrt {3}+3 i\right )}+\frac {2 \text {PolyLog}\left (2,-\frac {2 e^x}{3+i \sqrt {3}}\right )}{\sqrt {3} \left (-\sqrt {3}+3 i\right )}+\frac {x^2}{\sqrt {3} \left (\sqrt {3}+3 i\right )}-\frac {x^2}{\sqrt {3} \left (-\sqrt {3}+3 i\right )}-\frac {2 x \log \left (1+\frac {2 e^x}{3-i \sqrt {3}}\right )}{\sqrt {3} \left (\sqrt {3}+3 i\right )}+\frac {2 x \log \left (1+\frac {2 e^x}{3+i \sqrt {3}}\right )}{\sqrt {3} \left (-\sqrt {3}+3 i\right )} \end {gather*}
Antiderivative was successfully verified.
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Rule 2215
Rule 2221
Rule 2295
Rule 2317
Rule 2438
Rubi steps
\begin {align*} \int \frac {x}{3+3 e^x+e^{2 x}} \, dx &=-\frac {(2 i) \int \frac {x}{3-i \sqrt {3}+2 e^x} \, dx}{\sqrt {3}}+\frac {(2 i) \int \frac {x}{3+i \sqrt {3}+2 e^x} \, dx}{\sqrt {3}}\\ &=-\frac {x^2}{\sqrt {3} \left (3 i-\sqrt {3}\right )}+\frac {x^2}{\sqrt {3} \left (3 i+\sqrt {3}\right )}+\frac {(4 i) \int \frac {e^x x}{3-i \sqrt {3}+2 e^x} \, dx}{\sqrt {3} \left (3-i \sqrt {3}\right )}-\frac {(4 i) \int \frac {e^x x}{3+i \sqrt {3}+2 e^x} \, dx}{\sqrt {3} \left (3+i \sqrt {3}\right )}\\ &=-\frac {x^2}{\sqrt {3} \left (3 i-\sqrt {3}\right )}+\frac {x^2}{\sqrt {3} \left (3 i+\sqrt {3}\right )}-\frac {2 x \log \left (1+\frac {2 e^x}{3-i \sqrt {3}}\right )}{\sqrt {3} \left (3 i+\sqrt {3}\right )}+\frac {2 x \log \left (1+\frac {2 e^x}{3+i \sqrt {3}}\right )}{\sqrt {3} \left (3 i-\sqrt {3}\right )}-\frac {(2 i) \int \log \left (1+\frac {2 e^x}{3-i \sqrt {3}}\right ) \, dx}{\sqrt {3} \left (3-i \sqrt {3}\right )}+\frac {(2 i) \int \log \left (1+\frac {2 e^x}{3+i \sqrt {3}}\right ) \, dx}{\sqrt {3} \left (3+i \sqrt {3}\right )}\\ &=-\frac {x^2}{\sqrt {3} \left (3 i-\sqrt {3}\right )}+\frac {x^2}{\sqrt {3} \left (3 i+\sqrt {3}\right )}-\frac {2 x \log \left (1+\frac {2 e^x}{3-i \sqrt {3}}\right )}{\sqrt {3} \left (3 i+\sqrt {3}\right )}+\frac {2 x \log \left (1+\frac {2 e^x}{3+i \sqrt {3}}\right )}{\sqrt {3} \left (3 i-\sqrt {3}\right )}-\frac {(2 i) \text {Subst}\left (\int \frac {\log \left (1+\frac {2 x}{3-i \sqrt {3}}\right )}{x} \, dx,x,e^x\right )}{\sqrt {3} \left (3-i \sqrt {3}\right )}+\frac {(2 i) \text {Subst}\left (\int \frac {\log \left (1+\frac {2 x}{3+i \sqrt {3}}\right )}{x} \, dx,x,e^x\right )}{\sqrt {3} \left (3+i \sqrt {3}\right )}\\ &=-\frac {x^2}{\sqrt {3} \left (3 i-\sqrt {3}\right )}+\frac {x^2}{\sqrt {3} \left (3 i+\sqrt {3}\right )}-\frac {2 x \log \left (1+\frac {2 e^x}{3-i \sqrt {3}}\right )}{\sqrt {3} \left (3 i+\sqrt {3}\right )}+\frac {2 x \log \left (1+\frac {2 e^x}{3+i \sqrt {3}}\right )}{\sqrt {3} \left (3 i-\sqrt {3}\right )}-\frac {2 \text {Li}_2\left (-\frac {2 e^x}{3-i \sqrt {3}}\right )}{\sqrt {3} \left (3 i+\sqrt {3}\right )}+\frac {2 \text {Li}_2\left (-\frac {2 e^x}{3+i \sqrt {3}}\right )}{\sqrt {3} \left (3 i-\sqrt {3}\right )}\\ \end {align*}
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Mathematica [A]
time = 0.08, size = 144, normalized size = 0.71 \begin {gather*} \frac {-x \left (\left (-3 i+\sqrt {3}\right ) \log \left (1+\frac {1}{2} \left (3-i \sqrt {3}\right ) e^{-x}\right )+\left (3 i+\sqrt {3}\right ) \log \left (1+\frac {1}{2} \left (3+i \sqrt {3}\right ) e^{-x}\right )\right )+\left (3 i+\sqrt {3}\right ) \text {Li}_2\left (-\frac {1}{2} i \left (-3 i+\sqrt {3}\right ) e^{-x}\right )+\left (-3 i+\sqrt {3}\right ) \text {Li}_2\left (\frac {1}{2} i \left (3 i+\sqrt {3}\right ) e^{-x}\right )}{6 \sqrt {3}} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.03, size = 235, normalized size = 1.15
method | result | size |
default | \(\frac {i \sqrt {3}\, x \ln \left (\frac {i \sqrt {3}-2 \,{\mathrm e}^{x}-3}{-3+i \sqrt {3}}\right )}{6}-\frac {x \ln \left (\frac {i \sqrt {3}-2 \,{\mathrm e}^{x}-3}{-3+i \sqrt {3}}\right )}{6}-\frac {i \sqrt {3}\, x \ln \left (\frac {i \sqrt {3}+2 \,{\mathrm e}^{x}+3}{3+i \sqrt {3}}\right )}{6}-\frac {x \ln \left (\frac {i \sqrt {3}+2 \,{\mathrm e}^{x}+3}{3+i \sqrt {3}}\right )}{6}+\frac {i \sqrt {3}\, \dilog \left (\frac {i \sqrt {3}-2 \,{\mathrm e}^{x}-3}{-3+i \sqrt {3}}\right )}{6}-\frac {\dilog \left (\frac {i \sqrt {3}-2 \,{\mathrm e}^{x}-3}{-3+i \sqrt {3}}\right )}{6}-\frac {i \sqrt {3}\, \dilog \left (\frac {i \sqrt {3}+2 \,{\mathrm e}^{x}+3}{3+i \sqrt {3}}\right )}{6}-\frac {\dilog \left (\frac {i \sqrt {3}+2 \,{\mathrm e}^{x}+3}{3+i \sqrt {3}}\right )}{6}+\frac {x^{2}}{6}\) | \(235\) |
risch | \(\frac {i \sqrt {3}\, x \ln \left (\frac {i \sqrt {3}-2 \,{\mathrm e}^{x}-3}{-3+i \sqrt {3}}\right )}{6}-\frac {x \ln \left (\frac {i \sqrt {3}-2 \,{\mathrm e}^{x}-3}{-3+i \sqrt {3}}\right )}{6}-\frac {i \sqrt {3}\, x \ln \left (\frac {i \sqrt {3}+2 \,{\mathrm e}^{x}+3}{3+i \sqrt {3}}\right )}{6}-\frac {x \ln \left (\frac {i \sqrt {3}+2 \,{\mathrm e}^{x}+3}{3+i \sqrt {3}}\right )}{6}+\frac {i \sqrt {3}\, \dilog \left (\frac {i \sqrt {3}-2 \,{\mathrm e}^{x}-3}{-3+i \sqrt {3}}\right )}{6}-\frac {\dilog \left (\frac {i \sqrt {3}-2 \,{\mathrm e}^{x}-3}{-3+i \sqrt {3}}\right )}{6}-\frac {i \sqrt {3}\, \dilog \left (\frac {i \sqrt {3}+2 \,{\mathrm e}^{x}+3}{3+i \sqrt {3}}\right )}{6}-\frac {\dilog \left (\frac {i \sqrt {3}+2 \,{\mathrm e}^{x}+3}{3+i \sqrt {3}}\right )}{6}+\frac {x^{2}}{6}\) | \(235\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Failed to integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.37, size = 100, normalized size = 0.49 \begin {gather*} \frac {1}{6} \, x^{2} + \frac {1}{6} \, {\left (i \, \sqrt {3} - 1\right )} {\rm Li}_2\left (-\frac {1}{6} \, {\left (i \, \sqrt {3} + 3\right )} e^{x}\right ) + \frac {1}{6} \, {\left (-i \, \sqrt {3} - 1\right )} {\rm Li}_2\left (-\frac {1}{6} \, {\left (-i \, \sqrt {3} + 3\right )} e^{x}\right ) + \frac {1}{6} \, {\left (i \, \sqrt {3} x - x\right )} \log \left (\frac {1}{6} \, {\left (i \, \sqrt {3} + 3\right )} e^{x} + 1\right ) + \frac {1}{6} \, {\left (-i \, \sqrt {3} x - x\right )} \log \left (\frac {1}{6} \, {\left (-i \, \sqrt {3} + 3\right )} e^{x} + 1\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \int \frac {x}{e^{2 x} + 3 e^{x} + 3}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [F]
time = 0.00, size = -1, normalized size = -0.00 \begin {gather*} \int \frac {x}{{\mathrm {e}}^{2\,x}+3\,{\mathrm {e}}^x+3} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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