Optimal. Leaf size=44 \[ -\frac{\tanh ^{-1}\left (\frac{\sqrt{f} \left (e-2 x^3 (d-f)\right )}{\sqrt{d} e}\right )}{6 \sqrt{d} e \sqrt{f}} \]
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Rubi [A] time = 0.0616221, antiderivative size = 44, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 32, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.125, Rules used = {6, 1352, 618, 206} \[ -\frac{\tanh ^{-1}\left (\frac{\sqrt{f} \left (e-2 x^3 (d-f)\right )}{\sqrt{d} e}\right )}{6 \sqrt{d} e \sqrt{f}} \]
Antiderivative was successfully verified.
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Rule 6
Rule 1352
Rule 618
Rule 206
Rubi steps
\begin{align*} \int \frac{x^2}{e^2+4 e f x^3-4 d f x^6+4 f^2 x^6} \, dx &=\int \frac{x^2}{e^2+4 e f x^3+\left (-4 d f+4 f^2\right ) x^6} \, dx\\ &=\frac{1}{3} \operatorname{Subst}\left (\int \frac{1}{e^2+4 e f x+\left (-4 d f+4 f^2\right ) x^2} \, dx,x,x^3\right )\\ &=-\left (\frac{2}{3} \operatorname{Subst}\left (\int \frac{1}{16 d e^2 f-x^2} \, dx,x,4 f \left (e-2 (d-f) x^3\right )\right )\right )\\ &=-\frac{\tanh ^{-1}\left (\frac{\sqrt{f} \left (e-2 (d-f) x^3\right )}{\sqrt{d} e}\right )}{6 \sqrt{d} e \sqrt{f}}\\ \end{align*}
Mathematica [A] time = 0.0218638, size = 46, normalized size = 1.05 \[ -\frac{\tanh ^{-1}\left (\frac{\sqrt{f} \left (-2 d x^3+e+2 f x^3\right )}{\sqrt{d} e}\right )}{6 \sqrt{d} e \sqrt{f}} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.003, size = 42, normalized size = 1. \begin{align*}{\frac{1}{6\,e}{\it Artanh} \left ({\frac{2\, \left ( 4\,df-4\,{f}^{2} \right ){x}^{3}-4\,fe}{4\,e}{\frac{1}{\sqrt{df}}}} \right ){\frac{1}{\sqrt{df}}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: ValueError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.28025, size = 343, normalized size = 7.8 \begin{align*} \left [\frac{\sqrt{d f} \log \left (-\frac{4 \,{\left (d^{2} f - 2 \, d f^{2} + f^{3}\right )} x^{6} - 4 \,{\left (d e f - e f^{2}\right )} x^{3} + d e^{2} + e^{2} f + 2 \,{\left (2 \,{\left (d e - e f\right )} x^{3} - e^{2}\right )} \sqrt{d f}}{4 \,{\left (d f - f^{2}\right )} x^{6} - 4 \, e f x^{3} - e^{2}}\right )}{12 \, d e f}, \frac{\sqrt{-d f} \arctan \left (-\frac{{\left (2 \,{\left (d - f\right )} x^{3} - e\right )} \sqrt{-d f}}{d e}\right )}{6 \, d e f}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 0.736859, size = 75, normalized size = 1.7 \begin{align*} - \frac{\frac{\sqrt{\frac{1}{d f}} \log{\left (x^{3} + \frac{- d e \sqrt{\frac{1}{d f}} - e}{2 d - 2 f} \right )}}{12} - \frac{\sqrt{\frac{1}{d f}} \log{\left (x^{3} + \frac{d e \sqrt{\frac{1}{d f}} - e}{2 d - 2 f} \right )}}{12}}{e} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.75315, size = 55, normalized size = 1.25 \begin{align*} -\frac{\arctan \left (\frac{2 \, d f x^{3} - 2 \, f^{2} x^{3} - f e}{\sqrt{-d f e^{2}}}\right )}{6 \, \sqrt{-d f e^{2}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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