Optimal. Leaf size=35 \[ -\frac {f^{a+b x^3}}{3 x^3}+\frac {1}{3} b f^a \text {Ei}\left (b x^3 \log (f)\right ) \log (f) \]
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Rubi [A]
time = 0.03, antiderivative size = 35, normalized size of antiderivative = 1.00, number of steps
used = 2, number of rules used = 2, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.154, Rules used = {2245, 2241}
\begin {gather*} \frac {1}{3} b f^a \log (f) \text {Ei}\left (b x^3 \log (f)\right )-\frac {f^{a+b x^3}}{3 x^3} \end {gather*}
Antiderivative was successfully verified.
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Rule 2241
Rule 2245
Rubi steps
\begin {align*} \int \frac {f^{a+b x^3}}{x^4} \, dx &=-\frac {f^{a+b x^3}}{3 x^3}+(b \log (f)) \int \frac {f^{a+b x^3}}{x} \, dx\\ &=-\frac {f^{a+b x^3}}{3 x^3}+\frac {1}{3} b f^a \text {Ei}\left (b x^3 \log (f)\right ) \log (f)\\ \end {align*}
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Mathematica [A]
time = 0.03, size = 32, normalized size = 0.91 \begin {gather*} \frac {1}{3} f^a \left (-\frac {f^{b x^3}}{x^3}+b \text {Ei}\left (b x^3 \log (f)\right ) \log (f)\right ) \end {gather*}
Antiderivative was successfully verified.
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Maple [B] Leaf count of result is larger than twice the leaf count of optimal. \(96\) vs.
\(2(31)=62\).
time = 0.02, size = 97, normalized size = 2.77
method | result | size |
meijerg | \(-\frac {f^{a} b \ln \left (f \right ) \left (-\frac {2+2 b \,x^{3} \ln \left (f \right )}{2 b \,x^{3} \ln \left (f \right )}+\frac {{\mathrm e}^{b \,x^{3} \ln \left (f \right )}}{x^{3} \ln \left (f \right ) b}+\ln \left (-b \,x^{3} \ln \left (f \right )\right )+\expIntegral \left (1, -b \,x^{3} \ln \left (f \right )\right )+1-3 \ln \left (x \right )-\ln \left (-b \right )-\ln \left (\ln \left (f \right )\right )+\frac {1}{x^{3} \ln \left (f \right ) b}\right )}{3}\) | \(97\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.32, size = 18, normalized size = 0.51 \begin {gather*} \frac {1}{3} \, b f^{a} \Gamma \left (-1, -b x^{3} \log \left (f\right )\right ) \log \left (f\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.36, size = 35, normalized size = 1.00 \begin {gather*} \frac {b f^{a} x^{3} {\rm Ei}\left (b x^{3} \log \left (f\right )\right ) \log \left (f\right ) - f^{b x^{3} + a}}{3 \, x^{3}} \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 {f^{a + b x^{3}}}{x^{4}}\, 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 [B]
time = 3.53, size = 32, normalized size = 0.91 \begin {gather*} -\frac {f^a\,\left (f^{b\,x^3}+b\,x^3\,\ln \left (f\right )\,\mathrm {expint}\left (-b\,x^3\,\ln \left (f\right )\right )\right )}{3\,x^3} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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