Optimal. Leaf size=95 \[ -\frac {15 b^2}{8 a^3 \sqrt {a+\frac {b}{x^2}}}-\frac {5 b x^2}{8 a^2 \sqrt {a+\frac {b}{x^2}}}+\frac {x^4}{4 a \sqrt {a+\frac {b}{x^2}}}+\frac {15 b^2 \tanh ^{-1}\left (\frac {\sqrt {a+\frac {b}{x^2}}}{\sqrt {a}}\right )}{8 a^{7/2}} \]
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Rubi [A]
time = 0.03, antiderivative size = 95, normalized size of antiderivative = 1.00, number of steps
used = 6, number of rules used = 5, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.333, Rules used = {272, 44, 53, 65,
214} \begin {gather*} \frac {15 b^2 \tanh ^{-1}\left (\frac {\sqrt {a+\frac {b}{x^2}}}{\sqrt {a}}\right )}{8 a^{7/2}}-\frac {15 b^2}{8 a^3 \sqrt {a+\frac {b}{x^2}}}-\frac {5 b x^2}{8 a^2 \sqrt {a+\frac {b}{x^2}}}+\frac {x^4}{4 a \sqrt {a+\frac {b}{x^2}}} \end {gather*}
Antiderivative was successfully verified.
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Rule 44
Rule 53
Rule 65
Rule 214
Rule 272
Rubi steps
\begin {align*} \int \frac {x^3}{\left (a+\frac {b}{x^2}\right )^{3/2}} \, dx &=-\left (\frac {1}{2} \text {Subst}\left (\int \frac {1}{x^3 (a+b x)^{3/2}} \, dx,x,\frac {1}{x^2}\right )\right )\\ &=-\frac {x^4}{a \sqrt {a+\frac {b}{x^2}}}-\frac {5 \text {Subst}\left (\int \frac {1}{x^3 \sqrt {a+b x}} \, dx,x,\frac {1}{x^2}\right )}{2 a}\\ &=-\frac {x^4}{a \sqrt {a+\frac {b}{x^2}}}+\frac {5 \sqrt {a+\frac {b}{x^2}} x^4}{4 a^2}+\frac {(15 b) \text {Subst}\left (\int \frac {1}{x^2 \sqrt {a+b x}} \, dx,x,\frac {1}{x^2}\right )}{8 a^2}\\ &=-\frac {15 b \sqrt {a+\frac {b}{x^2}} x^2}{8 a^3}-\frac {x^4}{a \sqrt {a+\frac {b}{x^2}}}+\frac {5 \sqrt {a+\frac {b}{x^2}} x^4}{4 a^2}-\frac {\left (15 b^2\right ) \text {Subst}\left (\int \frac {1}{x \sqrt {a+b x}} \, dx,x,\frac {1}{x^2}\right )}{16 a^3}\\ &=-\frac {15 b \sqrt {a+\frac {b}{x^2}} x^2}{8 a^3}-\frac {x^4}{a \sqrt {a+\frac {b}{x^2}}}+\frac {5 \sqrt {a+\frac {b}{x^2}} x^4}{4 a^2}-\frac {(15 b) \text {Subst}\left (\int \frac {1}{-\frac {a}{b}+\frac {x^2}{b}} \, dx,x,\sqrt {a+\frac {b}{x^2}}\right )}{8 a^3}\\ &=-\frac {15 b \sqrt {a+\frac {b}{x^2}} x^2}{8 a^3}-\frac {x^4}{a \sqrt {a+\frac {b}{x^2}}}+\frac {5 \sqrt {a+\frac {b}{x^2}} x^4}{4 a^2}+\frac {15 b^2 \tanh ^{-1}\left (\frac {\sqrt {a+\frac {b}{x^2}}}{\sqrt {a}}\right )}{8 a^{7/2}}\\ \end {align*}
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Mathematica [A]
time = 0.09, size = 89, normalized size = 0.94 \begin {gather*} \frac {\sqrt {a} x \left (-15 b^2-5 a b x^2+2 a^2 x^4\right )-15 b^2 \sqrt {b+a x^2} \log \left (-\sqrt {a} x+\sqrt {b+a x^2}\right )}{8 a^{7/2} \sqrt {a+\frac {b}{x^2}} x} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.07, size = 87, normalized size = 0.92
method | result | size |
default | \(\frac {\left (a \,x^{2}+b \right ) \left (2 x^{5} a^{\frac {7}{2}}-5 a^{\frac {5}{2}} b \,x^{3}-15 a^{\frac {3}{2}} b^{2} x +15 \ln \left (x \sqrt {a}+\sqrt {a \,x^{2}+b}\right ) \sqrt {a \,x^{2}+b}\, a \,b^{2}\right )}{8 \left (\frac {a \,x^{2}+b}{x^{2}}\right )^{\frac {3}{2}} x^{3} a^{\frac {9}{2}}}\) | \(87\) |
risch | \(\frac {\left (2 a \,x^{2}-7 b \right ) \left (a \,x^{2}+b \right )}{8 a^{3} \sqrt {\frac {a \,x^{2}+b}{x^{2}}}}+\frac {\left (-\frac {b^{2} x}{a^{3} \sqrt {a \,x^{2}+b}}+\frac {15 b^{2} \ln \left (x \sqrt {a}+\sqrt {a \,x^{2}+b}\right )}{8 a^{\frac {7}{2}}}\right ) \sqrt {a \,x^{2}+b}}{\sqrt {\frac {a \,x^{2}+b}{x^{2}}}\, x}\) | \(106\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.52, size = 122, normalized size = 1.28 \begin {gather*} -\frac {15 \, {\left (a + \frac {b}{x^{2}}\right )}^{2} b^{2} - 25 \, {\left (a + \frac {b}{x^{2}}\right )} a b^{2} + 8 \, a^{2} b^{2}}{8 \, {\left ({\left (a + \frac {b}{x^{2}}\right )}^{\frac {5}{2}} a^{3} - 2 \, {\left (a + \frac {b}{x^{2}}\right )}^{\frac {3}{2}} a^{4} + \sqrt {a + \frac {b}{x^{2}}} a^{5}\right )}} - \frac {15 \, b^{2} \log \left (\frac {\sqrt {a + \frac {b}{x^{2}}} - \sqrt {a}}{\sqrt {a + \frac {b}{x^{2}}} + \sqrt {a}}\right )}{16 \, a^{\frac {7}{2}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.39, size = 221, normalized size = 2.33 \begin {gather*} \left [\frac {15 \, {\left (a b^{2} x^{2} + b^{3}\right )} \sqrt {a} \log \left (-2 \, a x^{2} - 2 \, \sqrt {a} x^{2} \sqrt {\frac {a x^{2} + b}{x^{2}}} - b\right ) + 2 \, {\left (2 \, a^{3} x^{6} - 5 \, a^{2} b x^{4} - 15 \, a b^{2} x^{2}\right )} \sqrt {\frac {a x^{2} + b}{x^{2}}}}{16 \, {\left (a^{5} x^{2} + a^{4} b\right )}}, -\frac {15 \, {\left (a b^{2} x^{2} + b^{3}\right )} \sqrt {-a} \arctan \left (\frac {\sqrt {-a} x^{2} \sqrt {\frac {a x^{2} + b}{x^{2}}}}{a x^{2} + b}\right ) - {\left (2 \, a^{3} x^{6} - 5 \, a^{2} b x^{4} - 15 \, a b^{2} x^{2}\right )} \sqrt {\frac {a x^{2} + b}{x^{2}}}}{8 \, {\left (a^{5} x^{2} + a^{4} b\right )}}\right ] \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 3.89, size = 100, normalized size = 1.05 \begin {gather*} \frac {x^{5}}{4 a \sqrt {b} \sqrt {\frac {a x^{2}}{b} + 1}} - \frac {5 \sqrt {b} x^{3}}{8 a^{2} \sqrt {\frac {a x^{2}}{b} + 1}} - \frac {15 b^{\frac {3}{2}} x}{8 a^{3} \sqrt {\frac {a x^{2}}{b} + 1}} + \frac {15 b^{2} \operatorname {asinh}{\left (\frac {\sqrt {a} x}{\sqrt {b}} \right )}}{8 a^{\frac {7}{2}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 1.87, size = 96, normalized size = 1.01 \begin {gather*} \frac {{\left (x^{2} {\left (\frac {2 \, x^{2}}{a \mathrm {sgn}\left (x\right )} - \frac {5 \, b}{a^{2} \mathrm {sgn}\left (x\right )}\right )} - \frac {15 \, b^{2}}{a^{3} \mathrm {sgn}\left (x\right )}\right )} x}{8 \, \sqrt {a x^{2} + b}} + \frac {15 \, b^{2} \log \left ({\left | b \right |}\right ) \mathrm {sgn}\left (x\right )}{16 \, a^{\frac {7}{2}}} - \frac {15 \, b^{2} \log \left ({\left | -\sqrt {a} x + \sqrt {a x^{2} + b} \right |}\right )}{8 \, a^{\frac {7}{2}} \mathrm {sgn}\left (x\right )} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 1.83, size = 75, normalized size = 0.79 \begin {gather*} \frac {15\,b^2\,\mathrm {atanh}\left (\frac {\sqrt {a+\frac {b}{x^2}}}{\sqrt {a}}\right )}{8\,a^{7/2}}-\frac {15\,b^2}{8\,a^3\,\sqrt {a+\frac {b}{x^2}}}+\frac {x^4}{4\,a\,\sqrt {a+\frac {b}{x^2}}}-\frac {5\,b\,x^2}{8\,a^2\,\sqrt {a+\frac {b}{x^2}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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