Optimal. Leaf size=45 \[ \frac {\text {Ei}\left (2 \log \left (c \left (a+b x^2\right )\right )\right )}{2 b^2 c^2}-\frac {a \text {li}\left (c \left (a+b x^2\right )\right )}{2 b^2 c} \]
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Rubi [A]
time = 0.06, antiderivative size = 45, normalized size of antiderivative = 1.00, number of steps
used = 8, number of rules used = 7, integrand size = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.438, Rules used = {2504, 2446,
2436, 2335, 2437, 2346, 2209} \begin {gather*} \frac {\text {Ei}\left (2 \log \left (c \left (b x^2+a\right )\right )\right )}{2 b^2 c^2}-\frac {a \text {li}\left (c \left (b x^2+a\right )\right )}{2 b^2 c} \end {gather*}
Antiderivative was successfully verified.
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Rule 2209
Rule 2335
Rule 2346
Rule 2436
Rule 2437
Rule 2446
Rule 2504
Rubi steps
\begin {align*} \int \frac {x^3}{\log \left (c \left (a+b x^2\right )\right )} \, dx &=\frac {1}{2} \text {Subst}\left (\int \frac {x}{\log (c (a+b x))} \, dx,x,x^2\right )\\ &=\frac {1}{2} \text {Subst}\left (\int \left (-\frac {a}{b \log (c (a+b x))}+\frac {a+b x}{b \log (c (a+b x))}\right ) \, dx,x,x^2\right )\\ &=\frac {\text {Subst}\left (\int \frac {a+b x}{\log (c (a+b x))} \, dx,x,x^2\right )}{2 b}-\frac {a \text {Subst}\left (\int \frac {1}{\log (c (a+b x))} \, dx,x,x^2\right )}{2 b}\\ &=\frac {\text {Subst}\left (\int \frac {x}{\log (c x)} \, dx,x,a+b x^2\right )}{2 b^2}-\frac {a \text {Subst}\left (\int \frac {1}{\log (c x)} \, dx,x,a+b x^2\right )}{2 b^2}\\ &=-\frac {a \text {li}\left (c \left (a+b x^2\right )\right )}{2 b^2 c}+\frac {\text {Subst}\left (\int \frac {e^{2 x}}{x} \, dx,x,\log \left (c \left (a+b x^2\right )\right )\right )}{2 b^2 c^2}\\ &=\frac {\text {Ei}\left (2 \log \left (c \left (a+b x^2\right )\right )\right )}{2 b^2 c^2}-\frac {a \text {li}\left (c \left (a+b x^2\right )\right )}{2 b^2 c}\\ \end {align*}
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Mathematica [A]
time = 0.07, size = 41, normalized size = 0.91 \begin {gather*} \frac {-a c \text {Ei}\left (\log \left (a c+b c x^2\right )\right )+\text {Ei}\left (2 \log \left (a c+b c x^2\right )\right )}{2 b^2 c^2} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 1.71, size = 43, normalized size = 0.96
method | result | size |
default | \(\frac {-\expIntegral \left (1, -2 \ln \left (c \left (b \,x^{2}+a \right )\right )\right )+c a \expIntegral \left (1, -\ln \left (c \left (b \,x^{2}+a \right )\right )\right )}{2 c^{2} b^{2}}\) | \(43\) |
risch | \(\frac {a \expIntegral \left (1, -\ln \left (c \left (b \,x^{2}+a \right )\right )\right )}{2 c \,b^{2}}-\frac {\expIntegral \left (1, -2 \ln \left (c \left (b \,x^{2}+a \right )\right )\right )}{2 c^{2} b^{2}}\) | \(47\) |
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 = 0.36, size = 54, normalized size = 1.20 \begin {gather*} -\frac {a c \operatorname {log\_integral}\left (b c x^{2} + a c\right ) - \operatorname {log\_integral}\left (b^{2} c^{2} x^{4} + 2 \, a b c^{2} x^{2} + a^{2} c^{2}\right )}{2 \, b^{2} c^{2}} \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^{3}}{\log {\left (a c + b c x^{2} \right )}}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 3.82, size = 44, normalized size = 0.98 \begin {gather*} -\frac {a {\rm Ei}\left (\log \left (b c x^{2} + a c\right )\right )}{2 \, b^{2} c} + \frac {{\rm Ei}\left (2 \, \log \left (b c x^{2} + a c\right )\right )}{2 \, b^{2} c^{2}} \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 = -0.02 \begin {gather*} \int \frac {x^3}{\ln \left (c\,\left (b\,x^2+a\right )\right )} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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