Integrand size = 13, antiderivative size = 35 \[ \int \frac {f^{a+b x^3}}{x^4} \, dx=-\frac {f^{a+b x^3}}{3 x^3}+\frac {1}{3} b f^a \operatorname {ExpIntegralEi}\left (b x^3 \log (f)\right ) \log (f) \]
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Time = 0.03 (sec) , antiderivative size = 35, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.154, Rules used = {2245, 2241} \[ \int \frac {f^{a+b x^3}}{x^4} \, dx=\frac {1}{3} b f^a \log (f) \operatorname {ExpIntegralEi}\left (b x^3 \log (f)\right )-\frac {f^{a+b x^3}}{3 x^3} \]
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Rule 2241
Rule 2245
Rubi steps \begin{align*} \text {integral}& = -\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*}
Time = 0.03 (sec) , antiderivative size = 32, normalized size of antiderivative = 0.91 \[ \int \frac {f^{a+b x^3}}{x^4} \, dx=\frac {1}{3} f^a \left (-\frac {f^{b x^3}}{x^3}+b \operatorname {ExpIntegralEi}\left (b x^3 \log (f)\right ) \log (f)\right ) \]
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Leaf count of result is larger than twice the leaf count of optimal. \(96\) vs. \(2(31)=62\).
Time = 0.03 (sec) , antiderivative size = 97, normalized size of antiderivative = 2.77
method | result | size |
meijerg | \(-\frac {f^{a} b \ln \left (f \right ) \left (\frac {1}{b \,x^{3} \ln \left (f \right )}+1-3 \ln \left (x \right )-\ln \left (-b \right )-\ln \left (\ln \left (f \right )\right )-\frac {2+2 b \,x^{3} \ln \left (f \right )}{2 b \,x^{3} \ln \left (f \right )}+\frac {{\mathrm e}^{b \,x^{3} \ln \left (f \right )}}{b \,x^{3} \ln \left (f \right )}+\ln \left (-b \,x^{3} \ln \left (f \right )\right )+\operatorname {Ei}_{1}\left (-b \,x^{3} \ln \left (f \right )\right )\right )}{3}\) | \(97\) |
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none
Time = 0.26 (sec) , antiderivative size = 35, normalized size of antiderivative = 1.00 \[ \int \frac {f^{a+b x^3}}{x^4} \, dx=\frac {b f^{a} x^{3} {\rm Ei}\left (b x^{3} \log \left (f\right )\right ) \log \left (f\right ) - f^{b x^{3} + a}}{3 \, x^{3}} \]
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\[ \int \frac {f^{a+b x^3}}{x^4} \, dx=\int \frac {f^{a + b x^{3}}}{x^{4}}\, dx \]
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none
Time = 0.23 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.51 \[ \int \frac {f^{a+b x^3}}{x^4} \, dx=\frac {1}{3} \, b f^{a} \Gamma \left (-1, -b x^{3} \log \left (f\right )\right ) \log \left (f\right ) \]
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\[ \int \frac {f^{a+b x^3}}{x^4} \, dx=\int { \frac {f^{b x^{3} + a}}{x^{4}} \,d x } \]
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Time = 0.18 (sec) , antiderivative size = 32, normalized size of antiderivative = 0.91 \[ \int \frac {f^{a+b x^3}}{x^4} \, dx=-\frac {f^a\,\left (f^{b\,x^3}+b\,x^3\,\ln \left (f\right )\,\mathrm {expint}\left (-b\,x^3\,\ln \left (f\right )\right )\right )}{3\,x^3} \]
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