Optimal. Leaf size=55 \[ \frac{a \tan ^{-1}\left (\frac{\sqrt{b} x^2}{\sqrt{a-b x^4}}\right )}{4 b^{3/2}}-\frac{x^2 \sqrt{a-b x^4}}{4 b} \]
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Rubi [A] time = 0.029561, antiderivative size = 55, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 16, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.25, Rules used = {275, 321, 217, 203} \[ \frac{a \tan ^{-1}\left (\frac{\sqrt{b} x^2}{\sqrt{a-b x^4}}\right )}{4 b^{3/2}}-\frac{x^2 \sqrt{a-b x^4}}{4 b} \]
Antiderivative was successfully verified.
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Rule 275
Rule 321
Rule 217
Rule 203
Rubi steps
\begin{align*} \int \frac{x^5}{\sqrt{a-b x^4}} \, dx &=\frac{1}{2} \operatorname{Subst}\left (\int \frac{x^2}{\sqrt{a-b x^2}} \, dx,x,x^2\right )\\ &=-\frac{x^2 \sqrt{a-b x^4}}{4 b}+\frac{a \operatorname{Subst}\left (\int \frac{1}{\sqrt{a-b x^2}} \, dx,x,x^2\right )}{4 b}\\ &=-\frac{x^2 \sqrt{a-b x^4}}{4 b}+\frac{a \operatorname{Subst}\left (\int \frac{1}{1+b x^2} \, dx,x,\frac{x^2}{\sqrt{a-b x^4}}\right )}{4 b}\\ &=-\frac{x^2 \sqrt{a-b x^4}}{4 b}+\frac{a \tan ^{-1}\left (\frac{\sqrt{b} x^2}{\sqrt{a-b x^4}}\right )}{4 b^{3/2}}\\ \end{align*}
Mathematica [A] time = 0.0228632, size = 55, normalized size = 1. \[ \frac{a \tan ^{-1}\left (\frac{\sqrt{b} x^2}{\sqrt{a-b x^4}}\right )}{4 b^{3/2}}-\frac{x^2 \sqrt{a-b x^4}}{4 b} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.012, size = 44, normalized size = 0.8 \begin{align*}{\frac{a}{4}\arctan \left ({{x}^{2}\sqrt{b}{\frac{1}{\sqrt{-b{x}^{4}+a}}}} \right ){b}^{-{\frac{3}{2}}}}-{\frac{{x}^{2}}{4\,b}\sqrt{-b{x}^{4}+a}} \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 = 1.55756, size = 271, normalized size = 4.93 \begin{align*} \left [-\frac{2 \, \sqrt{-b x^{4} + a} b x^{2} + a \sqrt{-b} \log \left (2 \, b x^{4} - 2 \, \sqrt{-b x^{4} + a} \sqrt{-b} x^{2} - a\right )}{8 \, b^{2}}, -\frac{\sqrt{-b x^{4} + a} b x^{2} + a \sqrt{b} \arctan \left (\frac{\sqrt{-b x^{4} + a} \sqrt{b} x^{2}}{b x^{4} - a}\right )}{4 \, b^{2}}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 3.03096, size = 129, normalized size = 2.35 \begin{align*} \begin{cases} - \frac{i \sqrt{a} x^{2} \sqrt{-1 + \frac{b x^{4}}{a}}}{4 b} - \frac{i a \operatorname{acosh}{\left (\frac{\sqrt{b} x^{2}}{\sqrt{a}} \right )}}{4 b^{\frac{3}{2}}} & \text{for}\: \frac{\left |{b x^{4}}\right |}{\left |{a}\right |} > 1 \\- \frac{\sqrt{a} x^{2}}{4 b \sqrt{1 - \frac{b x^{4}}{a}}} + \frac{a \operatorname{asin}{\left (\frac{\sqrt{b} x^{2}}{\sqrt{a}} \right )}}{4 b^{\frac{3}{2}}} + \frac{x^{6}}{4 \sqrt{a} \sqrt{1 - \frac{b x^{4}}{a}}} & \text{otherwise} \end{cases} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.13279, size = 72, normalized size = 1.31 \begin{align*} -\frac{\sqrt{-b x^{4} + a} x^{2}}{4 \, b} - \frac{a \log \left ({\left | -\sqrt{-b} x^{2} + \sqrt{-b x^{4} + a} \right |}\right )}{4 \, \sqrt{-b} b} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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