Optimal. Leaf size=52 \[ -\frac {x^2}{2 b \sqrt {a+b x^4}}+\frac {\tanh ^{-1}\left (\frac {\sqrt {b} x^2}{\sqrt {a+b x^4}}\right )}{2 b^{3/2}} \]
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Rubi [A]
time = 0.03, antiderivative size = 52, normalized size of antiderivative = 1.00, number of steps
used = 4, number of rules used = 4, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.267, Rules used = {281, 294, 223,
212} \begin {gather*} \frac {\tanh ^{-1}\left (\frac {\sqrt {b} x^2}{\sqrt {a+b x^4}}\right )}{2 b^{3/2}}-\frac {x^2}{2 b \sqrt {a+b x^4}} \end {gather*}
Antiderivative was successfully verified.
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Rule 212
Rule 223
Rule 281
Rule 294
Rubi steps
\begin {align*} \int \frac {x^5}{\left (a+b x^4\right )^{3/2}} \, dx &=\frac {1}{2} \text {Subst}\left (\int \frac {x^2}{\left (a+b x^2\right )^{3/2}} \, dx,x,x^2\right )\\ &=-\frac {x^2}{2 b \sqrt {a+b x^4}}+\frac {\text {Subst}\left (\int \frac {1}{\sqrt {a+b x^2}} \, dx,x,x^2\right )}{2 b}\\ &=-\frac {x^2}{2 b \sqrt {a+b x^4}}+\frac {\text {Subst}\left (\int \frac {1}{1-b x^2} \, dx,x,\frac {x^2}{\sqrt {a+b x^4}}\right )}{2 b}\\ &=-\frac {x^2}{2 b \sqrt {a+b x^4}}+\frac {\tanh ^{-1}\left (\frac {\sqrt {b} x^2}{\sqrt {a+b x^4}}\right )}{2 b^{3/2}}\\ \end {align*}
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Mathematica [A]
time = 0.16, size = 52, normalized size = 1.00 \begin {gather*} -\frac {x^2}{2 b \sqrt {a+b x^4}}+\frac {\tanh ^{-1}\left (\frac {\sqrt {a+b x^4}}{\sqrt {b} x^2}\right )}{2 b^{3/2}} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.15, size = 42, normalized size = 0.81
method | result | size |
default | \(-\frac {x^{2}}{2 b \sqrt {b \,x^{4}+a}}+\frac {\ln \left (x^{2} \sqrt {b}+\sqrt {b \,x^{4}+a}\right )}{2 b^{\frac {3}{2}}}\) | \(42\) |
elliptic | \(-\frac {x^{2}}{2 b \sqrt {b \,x^{4}+a}}+\frac {\ln \left (x^{2} \sqrt {b}+\sqrt {b \,x^{4}+a}\right )}{2 b^{\frac {3}{2}}}\) | \(42\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.50, size = 63, normalized size = 1.21 \begin {gather*} -\frac {x^{2}}{2 \, \sqrt {b x^{4} + a} b} - \frac {\log \left (-\frac {\sqrt {b} - \frac {\sqrt {b x^{4} + a}}{x^{2}}}{\sqrt {b} + \frac {\sqrt {b x^{4} + a}}{x^{2}}}\right )}{4 \, b^{\frac {3}{2}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.37, size = 138, normalized size = 2.65 \begin {gather*} \left [-\frac {2 \, \sqrt {b x^{4} + a} b x^{2} - {\left (b x^{4} + a\right )} \sqrt {b} \log \left (-2 \, b x^{4} - 2 \, \sqrt {b x^{4} + a} \sqrt {b} x^{2} - a\right )}{4 \, {\left (b^{3} x^{4} + a b^{2}\right )}}, -\frac {\sqrt {b x^{4} + a} b x^{2} + {\left (b x^{4} + a\right )} \sqrt {-b} \arctan \left (\frac {\sqrt {-b} x^{2}}{\sqrt {b x^{4} + a}}\right )}{2 \, {\left (b^{3} x^{4} + a b^{2}\right )}}\right ] \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 0.79, size = 44, normalized size = 0.85 \begin {gather*} \frac {\operatorname {asinh}{\left (\frac {\sqrt {b} x^{2}}{\sqrt {a}} \right )}}{2 b^{\frac {3}{2}}} - \frac {x^{2}}{2 \sqrt {a} b \sqrt {1 + \frac {b x^{4}}{a}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 1.68, size = 43, normalized size = 0.83 \begin {gather*} -\frac {x^{2}}{2 \, \sqrt {b x^{4} + a} b} - \frac {\log \left ({\left | -\sqrt {b} x^{2} + \sqrt {b x^{4} + a} \right |}\right )}{2 \, b^{\frac {3}{2}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [F]
time = 0.00, size = -1, normalized size = -0.02 \begin {gather*} \int \frac {x^5}{{\left (b\,x^4+a\right )}^{3/2}} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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