Optimal. Leaf size=42 \[ -\frac {1}{2} (d+e) \log (1-x)+\frac {1}{3} (d+2 e) \log (2-x)+\frac {1}{6} (d-e) \log (1+x) \]
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Rubi [A]
time = 0.03, antiderivative size = 42, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 2, integrand size = 21, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.095, Rules used = {1600, 2099}
\begin {gather*} -\frac {1}{2} (d+e) \log (1-x)+\frac {1}{3} (d+2 e) \log (2-x)+\frac {1}{6} (d-e) \log (x+1) \end {gather*}
Antiderivative was successfully verified.
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Rule 1600
Rule 2099
Rubi steps
\begin {align*} \int \frac {(2+x) (d+e x)}{4-5 x^2+x^4} \, dx &=\int \frac {d+e x}{2-x-2 x^2+x^3} \, dx\\ &=\int \left (\frac {d+2 e}{3 (-2+x)}+\frac {-d-e}{2 (-1+x)}+\frac {d-e}{6 (1+x)}\right ) \, dx\\ &=-\frac {1}{2} (d+e) \log (1-x)+\frac {1}{3} (d+2 e) \log (2-x)+\frac {1}{6} (d-e) \log (1+x)\\ \end {align*}
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Mathematica [A]
time = 0.01, size = 39, normalized size = 0.93 \begin {gather*} \frac {1}{6} (-3 (d+e) \log (1-x)+2 (d+2 e) \log (2-x)+(d-e) \log (1+x)) \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.02, size = 38, normalized size = 0.90
method | result | size |
default | \(\left (\frac {d}{3}+\frac {2 e}{3}\right ) \ln \left (x -2\right )+\left (-\frac {d}{2}-\frac {e}{2}\right ) \ln \left (-1+x \right )+\left (\frac {d}{6}-\frac {e}{6}\right ) \ln \left (1+x \right )\) | \(38\) |
norman | \(\left (\frac {d}{3}+\frac {2 e}{3}\right ) \ln \left (x -2\right )+\left (-\frac {d}{2}-\frac {e}{2}\right ) \ln \left (-1+x \right )+\left (\frac {d}{6}-\frac {e}{6}\right ) \ln \left (1+x \right )\) | \(38\) |
risch | \(\frac {\ln \left (2-x \right ) d}{3}+\frac {2 \ln \left (2-x \right ) e}{3}+\frac {\ln \left (1+x \right ) d}{6}-\frac {\ln \left (1+x \right ) e}{6}-\frac {\ln \left (1-x \right ) d}{2}-\frac {\ln \left (1-x \right ) e}{2}\) | \(52\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.28, size = 35, normalized size = 0.83 \begin {gather*} \frac {1}{6} \, {\left (d - e\right )} \log \left (x + 1\right ) - \frac {1}{2} \, {\left (d + e\right )} \log \left (x - 1\right ) + \frac {1}{3} \, {\left (d + 2 \, e\right )} \log \left (x - 2\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.42, size = 32, normalized size = 0.76 \begin {gather*} \frac {1}{6} \, {\left (d - e\right )} \log \left (x + 1\right ) - \frac {1}{2} \, {\left (d + e\right )} \log \left (x - 1\right ) + \frac {1}{3} \, {\left (d + 2 \, e\right )} \log \left (x - 2\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [B] Leaf count of result is larger than twice the leaf count of optimal. 304 vs.
\(2 (37) = 74\).
time = 1.20, size = 304, normalized size = 7.24 \begin {gather*} \frac {\left (d - e\right ) \log {\left (x + \frac {26 d^{3} + 66 d^{2} e - 9 d^{2} \left (d - e\right ) + 78 d e^{2} - 12 d e \left (d - e\right ) - 7 d \left (d - e\right )^{2} + 46 e^{3} + 3 e^{2} \left (d - e\right ) - 8 e \left (d - e\right )^{2}}{10 d^{3} + 69 d^{2} e + 102 d e^{2} + 35 e^{3}} \right )}}{6} - \frac {\left (d + e\right ) \log {\left (x + \frac {26 d^{3} + 66 d^{2} e + 27 d^{2} \left (d + e\right ) + 78 d e^{2} + 36 d e \left (d + e\right ) - 63 d \left (d + e\right )^{2} + 46 e^{3} - 9 e^{2} \left (d + e\right ) - 72 e \left (d + e\right )^{2}}{10 d^{3} + 69 d^{2} e + 102 d e^{2} + 35 e^{3}} \right )}}{2} + \frac {\left (d + 2 e\right ) \log {\left (x + \frac {26 d^{3} + 66 d^{2} e - 18 d^{2} \left (d + 2 e\right ) + 78 d e^{2} - 24 d e \left (d + 2 e\right ) - 28 d \left (d + 2 e\right )^{2} + 46 e^{3} + 6 e^{2} \left (d + 2 e\right ) - 32 e \left (d + 2 e\right )^{2}}{10 d^{3} + 69 d^{2} e + 102 d e^{2} + 35 e^{3}} \right )}}{3} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 4.63, size = 38, normalized size = 0.90 \begin {gather*} \frac {1}{6} \, {\left (d - e\right )} \log \left ({\left | x + 1 \right |}\right ) - \frac {1}{2} \, {\left (d + e\right )} \log \left ({\left | x - 1 \right |}\right ) + \frac {1}{3} \, {\left (d + 2 \, e\right )} \log \left ({\left | x - 2 \right |}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.84, size = 38, normalized size = 0.90 \begin {gather*} \ln \left (x-2\right )\,\left (\frac {d}{3}+\frac {2\,e}{3}\right )-\ln \left (x-1\right )\,\left (\frac {d}{2}+\frac {e}{2}\right )+\ln \left (x+1\right )\,\left (\frac {d}{6}-\frac {e}{6}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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