Integrand size = 13, antiderivative size = 20 \[ \int \frac {f^{a+\frac {b}{x^3}}}{x^4} \, dx=-\frac {f^{a+\frac {b}{x^3}}}{3 b \log (f)} \]
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Time = 0.01 (sec) , antiderivative size = 20, 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 = {2240} \[ \int \frac {f^{a+\frac {b}{x^3}}}{x^4} \, dx=-\frac {f^{a+\frac {b}{x^3}}}{3 b \log (f)} \]
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Rule 2240
Rubi steps \begin{align*} \text {integral}& = -\frac {f^{a+\frac {b}{x^3}}}{3 b \log (f)} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 20, normalized size of antiderivative = 1.00 \[ \int \frac {f^{a+\frac {b}{x^3}}}{x^4} \, dx=-\frac {f^{a+\frac {b}{x^3}}}{3 b \log (f)} \]
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Time = 0.06 (sec) , antiderivative size = 19, normalized size of antiderivative = 0.95
method | result | size |
derivativedivides | \(-\frac {f^{a +\frac {b}{x^{3}}}}{3 b \ln \left (f \right )}\) | \(19\) |
default | \(-\frac {f^{a +\frac {b}{x^{3}}}}{3 b \ln \left (f \right )}\) | \(19\) |
parallelrisch | \(-\frac {f^{a +\frac {b}{x^{3}}}}{3 b \ln \left (f \right )}\) | \(19\) |
norman | \(-\frac {{\mathrm e}^{\left (a +\frac {b}{x^{3}}\right ) \ln \left (f \right )}}{3 b \ln \left (f \right )}\) | \(21\) |
risch | \(-\frac {f^{\frac {a \,x^{3}+b}{x^{3}}}}{3 b \ln \left (f \right )}\) | \(23\) |
meijerg | \(\frac {f^{a} \left (1-{\mathrm e}^{\frac {b \ln \left (f \right )}{x^{3}}}\right )}{3 b \ln \left (f \right )}\) | \(25\) |
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none
Time = 0.26 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.10 \[ \int \frac {f^{a+\frac {b}{x^3}}}{x^4} \, dx=-\frac {f^{\frac {a x^{3} + b}{x^{3}}}}{3 \, b \log \left (f\right )} \]
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Time = 0.08 (sec) , antiderivative size = 27, normalized size of antiderivative = 1.35 \[ \int \frac {f^{a+\frac {b}{x^3}}}{x^4} \, dx=\begin {cases} - \frac {f^{a + \frac {b}{x^{3}}}}{3 b \log {\left (f \right )}} & \text {for}\: b \log {\left (f \right )} \neq 0 \\- \frac {1}{3 x^{3}} & \text {otherwise} \end {cases} \]
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none
Time = 0.18 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.90 \[ \int \frac {f^{a+\frac {b}{x^3}}}{x^4} \, dx=-\frac {f^{a + \frac {b}{x^{3}}}}{3 \, b \log \left (f\right )} \]
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none
Time = 0.32 (sec) , antiderivative size = 22, normalized size of antiderivative = 1.10 \[ \int \frac {f^{a+\frac {b}{x^3}}}{x^4} \, dx=-\frac {f^{\frac {a x^{3} + b}{x^{3}}}}{3 \, b \log \left (f\right )} \]
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Time = 0.12 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.90 \[ \int \frac {f^{a+\frac {b}{x^3}}}{x^4} \, dx=-\frac {f^{a+\frac {b}{x^3}}}{3\,b\,\ln \left (f\right )} \]
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