Integrand size = 13, antiderivative size = 39 \[ \int \frac {f^{a+b x^n}}{x^3} \, dx=-\frac {f^a \Gamma \left (-\frac {2}{n},-b x^n \log (f)\right ) \left (-b x^n \log (f)\right )^{2/n}}{n x^2} \]
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Time = 0.01 (sec) , antiderivative size = 39, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.077, Rules used = {2250} \[ \int \frac {f^{a+b x^n}}{x^3} \, dx=-\frac {f^a \left (-b \log (f) x^n\right )^{2/n} \Gamma \left (-\frac {2}{n},-b x^n \log (f)\right )}{n x^2} \]
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Rule 2250
Rubi steps \begin{align*} \text {integral}& = -\frac {f^a \Gamma \left (-\frac {2}{n},-b x^n \log (f)\right ) \left (-b x^n \log (f)\right )^{2/n}}{n x^2} \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 39, normalized size of antiderivative = 1.00 \[ \int \frac {f^{a+b x^n}}{x^3} \, dx=-\frac {f^a \Gamma \left (-\frac {2}{n},-b x^n \log (f)\right ) \left (-b x^n \log (f)\right )^{2/n}}{n x^2} \]
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Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 0.09 (sec) , antiderivative size = 212, normalized size of antiderivative = 5.44
method | result | size |
meijerg | \(\frac {f^{a} \ln \left (f \right )^{\frac {2}{n}} \left (-b \right )^{\frac {2}{n}} \left (-\frac {n \left (-b \right )^{-\frac {2}{n}} \ln \left (f \right )^{-\frac {2}{n}} \left (x^{n} \ln \left (f \right ) b n +n -2\right ) \Gamma \left (1+\frac {2}{n}\right ) \Gamma \left (\frac {n -2}{n}+1\right ) L_{\frac {2}{n}}^{\left (\frac {n -2}{n}\right )}\left (b \,x^{n} \ln \left (f \right )\right )}{2 x^{2} \left (n -2\right ) \Gamma \left (\frac {2}{n}+\frac {n -2}{n}+1\right )}+\frac {n^{2} x^{n -2} \left (-b \right )^{-\frac {2}{n}} \ln \left (f \right )^{1-\frac {2}{n}} b L_{\frac {2}{n}}^{\left (\frac {n -2}{n}+1\right )}\left (b \,x^{n} \ln \left (f \right )\right ) \Gamma \left (1+\frac {2}{n}\right ) \Gamma \left (\frac {n -2}{n}+1\right )}{2 \left (n -2\right ) \Gamma \left (\frac {2}{n}+\frac {n -2}{n}+1\right )}\right )}{n}\) | \(212\) |
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\[ \int \frac {f^{a+b x^n}}{x^3} \, dx=\int { \frac {f^{b x^{n} + a}}{x^{3}} \,d x } \]
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\[ \int \frac {f^{a+b x^n}}{x^3} \, dx=\int \frac {f^{a + b x^{n}}}{x^{3}}\, dx \]
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none
Time = 0.07 (sec) , antiderivative size = 39, normalized size of antiderivative = 1.00 \[ \int \frac {f^{a+b x^n}}{x^3} \, dx=-\frac {\left (-b x^{n} \log \left (f\right )\right )^{\frac {2}{n}} f^{a} \Gamma \left (-\frac {2}{n}, -b x^{n} \log \left (f\right )\right )}{n x^{2}} \]
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\[ \int \frac {f^{a+b x^n}}{x^3} \, dx=\int { \frac {f^{b x^{n} + a}}{x^{3}} \,d x } \]
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Time = 0.15 (sec) , antiderivative size = 48, normalized size of antiderivative = 1.23 \[ \int \frac {f^{a+b x^n}}{x^3} \, dx=-\frac {f^a\,{\mathrm {e}}^{\frac {b\,x^n\,\ln \left (f\right )}{2}}\,{\mathrm {M}}_{\frac {1}{n}+\frac {1}{2},-\frac {1}{n}}\left (b\,x^n\,\ln \left (f\right )\right )\,{\left (b\,x^n\,\ln \left (f\right )\right )}^{\frac {1}{n}-\frac {1}{2}}}{2\,x^2} \]
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