Optimal. Leaf size=81 \[ \frac {1}{12} b^3 f^a \log ^3(f) \text {Ei}\left (b x^2 \log (f)\right )-\frac {b^2 \log ^2(f) f^{a+b x^2}}{12 x^2}-\frac {f^{a+b x^2}}{6 x^6}-\frac {b \log (f) f^{a+b x^2}}{12 x^4} \]
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Rubi [A] time = 0.09, antiderivative size = 81, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 2, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.154, Rules used = {2214, 2210} \[ \frac {1}{12} b^3 f^a \log ^3(f) \text {Ei}\left (b x^2 \log (f)\right )-\frac {b^2 \log ^2(f) f^{a+b x^2}}{12 x^2}-\frac {f^{a+b x^2}}{6 x^6}-\frac {b \log (f) f^{a+b x^2}}{12 x^4} \]
Antiderivative was successfully verified.
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Rule 2210
Rule 2214
Rubi steps
\begin {align*} \int \frac {f^{a+b x^2}}{x^7} \, dx &=-\frac {f^{a+b x^2}}{6 x^6}+\frac {1}{3} (b \log (f)) \int \frac {f^{a+b x^2}}{x^5} \, dx\\ &=-\frac {f^{a+b x^2}}{6 x^6}-\frac {b f^{a+b x^2} \log (f)}{12 x^4}+\frac {1}{6} \left (b^2 \log ^2(f)\right ) \int \frac {f^{a+b x^2}}{x^3} \, dx\\ &=-\frac {f^{a+b x^2}}{6 x^6}-\frac {b f^{a+b x^2} \log (f)}{12 x^4}-\frac {b^2 f^{a+b x^2} \log ^2(f)}{12 x^2}+\frac {1}{6} \left (b^3 \log ^3(f)\right ) \int \frac {f^{a+b x^2}}{x} \, dx\\ &=-\frac {f^{a+b x^2}}{6 x^6}-\frac {b f^{a+b x^2} \log (f)}{12 x^4}-\frac {b^2 f^{a+b x^2} \log ^2(f)}{12 x^2}+\frac {1}{12} b^3 f^a \text {Ei}\left (b x^2 \log (f)\right ) \log ^3(f)\\ \end {align*}
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Mathematica [A] time = 0.02, size = 59, normalized size = 0.73 \[ \frac {f^a \left (b^3 x^6 \log ^3(f) \text {Ei}\left (b x^2 \log (f)\right )-f^{b x^2} \left (b^2 x^4 \log ^2(f)+b x^2 \log (f)+2\right )\right )}{12 x^6} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.42, size = 59, normalized size = 0.73 \[ \frac {b^{3} f^{a} x^{6} {\rm Ei}\left (b x^{2} \log \relax (f)\right ) \log \relax (f)^{3} - {\left (b^{2} x^{4} \log \relax (f)^{2} + b x^{2} \log \relax (f) + 2\right )} f^{b x^{2} + a}}{12 \, x^{6}} \]
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 \[ \int \frac {f^{b x^{2} + a}}{x^{7}}\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.05, size = 79, normalized size = 0.98 \[ -\frac {b^{3} f^{a} \Ei \left (1, -b \,x^{2} \ln \relax (f )\right ) \ln \relax (f )^{3}}{12}-\frac {b^{2} f^{a} f^{b \,x^{2}} \ln \relax (f )^{2}}{12 x^{2}}-\frac {b \,f^{a} f^{b \,x^{2}} \ln \relax (f )}{12 x^{4}}-\frac {f^{a} f^{b \,x^{2}}}{6 x^{6}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.65, size = 22, normalized size = 0.27 \[ \frac {1}{2} \, b^{3} f^{a} \Gamma \left (-3, -b x^{2} \log \relax (f)\right ) \log \relax (f)^{3} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 3.54, size = 69, normalized size = 0.85 \[ -\frac {b^3\,f^a\,{\ln \relax (f)}^3\,\left (f^{b\,x^2}\,\left (\frac {1}{6\,b\,x^2\,\ln \relax (f)}+\frac {1}{6\,b^2\,x^4\,{\ln \relax (f)}^2}+\frac {1}{3\,b^3\,x^6\,{\ln \relax (f)}^3}\right )+\frac {\mathrm {expint}\left (-b\,x^2\,\ln \relax (f)\right )}{6}\right )}{2} \]
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 \[ \int \frac {f^{a + b x^{2}}}{x^{7}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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