Optimal. Leaf size=71 \[ -\frac {3 a \sqrt {a+\frac {b}{x^2}}}{8 x}-\frac {\left (a+\frac {b}{x^2}\right )^{3/2}}{4 x}-\frac {3 a^2 \tanh ^{-1}\left (\frac {\sqrt {b}}{\sqrt {a+\frac {b}{x^2}} x}\right )}{8 \sqrt {b}} \]
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Rubi [A]
time = 0.02, antiderivative size = 71, normalized size of antiderivative = 1.00, number of steps
used = 5, number of rules used = 4, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.267, Rules used = {342, 201, 223,
212} \begin {gather*} -\frac {3 a^2 \tanh ^{-1}\left (\frac {\sqrt {b}}{x \sqrt {a+\frac {b}{x^2}}}\right )}{8 \sqrt {b}}-\frac {3 a \sqrt {a+\frac {b}{x^2}}}{8 x}-\frac {\left (a+\frac {b}{x^2}\right )^{3/2}}{4 x} \end {gather*}
Antiderivative was successfully verified.
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Rule 201
Rule 212
Rule 223
Rule 342
Rubi steps
\begin {align*} \int \frac {\left (a+\frac {b}{x^2}\right )^{3/2}}{x^2} \, dx &=-\text {Subst}\left (\int \left (a+b x^2\right )^{3/2} \, dx,x,\frac {1}{x}\right )\\ &=-\frac {\left (a+\frac {b}{x^2}\right )^{3/2}}{4 x}-\frac {1}{4} (3 a) \text {Subst}\left (\int \sqrt {a+b x^2} \, dx,x,\frac {1}{x}\right )\\ &=-\frac {3 a \sqrt {a+\frac {b}{x^2}}}{8 x}-\frac {\left (a+\frac {b}{x^2}\right )^{3/2}}{4 x}-\frac {1}{8} \left (3 a^2\right ) \text {Subst}\left (\int \frac {1}{\sqrt {a+b x^2}} \, dx,x,\frac {1}{x}\right )\\ &=-\frac {3 a \sqrt {a+\frac {b}{x^2}}}{8 x}-\frac {\left (a+\frac {b}{x^2}\right )^{3/2}}{4 x}-\frac {1}{8} \left (3 a^2\right ) \text {Subst}\left (\int \frac {1}{1-b x^2} \, dx,x,\frac {1}{\sqrt {a+\frac {b}{x^2}} x}\right )\\ &=-\frac {3 a \sqrt {a+\frac {b}{x^2}}}{8 x}-\frac {\left (a+\frac {b}{x^2}\right )^{3/2}}{4 x}-\frac {3 a^2 \tanh ^{-1}\left (\frac {\sqrt {b}}{\sqrt {a+\frac {b}{x^2}} x}\right )}{8 \sqrt {b}}\\ \end {align*}
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Mathematica [A]
time = 0.11, size = 70, normalized size = 0.99 \begin {gather*} \frac {\sqrt {a+\frac {b}{x^2}} \left (-2 b-5 a x^2-\frac {3 a^2 x^4 \tanh ^{-1}\left (\frac {\sqrt {b+a x^2}}{\sqrt {b}}\right )}{\sqrt {b} \sqrt {b+a x^2}}\right )}{8 x^3} \end {gather*}
Antiderivative was successfully verified.
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Maple [B] Leaf count of result is larger than twice the leaf count of optimal. \(124\) vs.
\(2(55)=110\).
time = 0.04, size = 125, normalized size = 1.76
method | result | size |
risch | \(-\frac {\left (5 a \,x^{2}+2 b \right ) \sqrt {\frac {a \,x^{2}+b}{x^{2}}}}{8 x^{3}}-\frac {3 a^{2} \ln \left (\frac {2 b +2 \sqrt {b}\, \sqrt {a \,x^{2}+b}}{x}\right ) \sqrt {\frac {a \,x^{2}+b}{x^{2}}}\, x}{8 \sqrt {b}\, \sqrt {a \,x^{2}+b}}\) | \(84\) |
default | \(-\frac {\left (\frac {a \,x^{2}+b}{x^{2}}\right )^{\frac {3}{2}} \left (-\left (a \,x^{2}+b \right )^{\frac {3}{2}} a^{2} x^{4}+3 b^{\frac {3}{2}} \ln \left (\frac {2 b +2 \sqrt {b}\, \sqrt {a \,x^{2}+b}}{x}\right ) a^{2} x^{4}+\left (a \,x^{2}+b \right )^{\frac {5}{2}} a \,x^{2}-3 \sqrt {a \,x^{2}+b}\, a^{2} b \,x^{4}+2 \left (a \,x^{2}+b \right )^{\frac {5}{2}} b \right )}{8 x \left (a \,x^{2}+b \right )^{\frac {3}{2}} b^{2}}\) | \(125\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [B] Leaf count of result is larger than twice the leaf count of optimal. 113 vs.
\(2 (55) = 110\).
time = 0.50, size = 113, normalized size = 1.59 \begin {gather*} \frac {3 \, a^{2} \log \left (\frac {\sqrt {a + \frac {b}{x^{2}}} x - \sqrt {b}}{\sqrt {a + \frac {b}{x^{2}}} x + \sqrt {b}}\right )}{16 \, \sqrt {b}} - \frac {5 \, {\left (a + \frac {b}{x^{2}}\right )}^{\frac {3}{2}} a^{2} x^{3} - 3 \, \sqrt {a + \frac {b}{x^{2}}} a^{2} b x}{8 \, {\left ({\left (a + \frac {b}{x^{2}}\right )}^{2} x^{4} - 2 \, {\left (a + \frac {b}{x^{2}}\right )} b x^{2} + b^{2}\right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.39, size = 163, normalized size = 2.30 \begin {gather*} \left [\frac {3 \, a^{2} \sqrt {b} x^{3} \log \left (-\frac {a x^{2} - 2 \, \sqrt {b} x \sqrt {\frac {a x^{2} + b}{x^{2}}} + 2 \, b}{x^{2}}\right ) - 2 \, {\left (5 \, a b x^{2} + 2 \, b^{2}\right )} \sqrt {\frac {a x^{2} + b}{x^{2}}}}{16 \, b x^{3}}, \frac {3 \, a^{2} \sqrt {-b} x^{3} \arctan \left (\frac {\sqrt {-b} x \sqrt {\frac {a x^{2} + b}{x^{2}}}}{a x^{2} + b}\right ) - {\left (5 \, a b x^{2} + 2 \, b^{2}\right )} \sqrt {\frac {a x^{2} + b}{x^{2}}}}{8 \, b x^{3}}\right ] \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A]
time = 1.63, size = 71, normalized size = 1.00 \begin {gather*} - \frac {5 a^{\frac {3}{2}} \sqrt {1 + \frac {b}{a x^{2}}}}{8 x} - \frac {\sqrt {a} b \sqrt {1 + \frac {b}{a x^{2}}}}{4 x^{3}} - \frac {3 a^{2} \operatorname {asinh}{\left (\frac {\sqrt {b}}{\sqrt {a} x} \right )}}{8 \sqrt {b}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.99, size = 76, normalized size = 1.07 \begin {gather*} \frac {\frac {3 \, a^{3} \arctan \left (\frac {\sqrt {a x^{2} + b}}{\sqrt {-b}}\right ) \mathrm {sgn}\left (x\right )}{\sqrt {-b}} - \frac {5 \, {\left (a x^{2} + b\right )}^{\frac {3}{2}} a^{3} \mathrm {sgn}\left (x\right ) - 3 \, \sqrt {a x^{2} + b} a^{3} b \mathrm {sgn}\left (x\right )}{a^{2} x^{4}}}{8 \, a} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 1.53, size = 39, normalized size = 0.55 \begin {gather*} -\frac {{\left (a\,x^2+b\right )}^{3/2}\,{{}}_2{\mathrm {F}}_1\left (-\frac {3}{2},\frac {1}{2};\ \frac {3}{2};\ -\frac {b}{a\,x^2}\right )}{x\,{\left (\frac {b}{a}+x^2\right )}^{3/2}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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