Integrand size = 17, antiderivative size = 103 \[ \int \frac {\left (a+\frac {b}{x}\right )^{3/2}}{x^{5/2}} \, dx=-\frac {a \sqrt {a+\frac {b}{x}}}{4 x^{3/2}}-\frac {\left (a+\frac {b}{x}\right )^{3/2}}{3 x^{3/2}}-\frac {a^2 \sqrt {a+\frac {b}{x}}}{8 b \sqrt {x}}+\frac {a^3 \text {arctanh}\left (\frac {\sqrt {b}}{\sqrt {a+\frac {b}{x}} \sqrt {x}}\right )}{8 b^{3/2}} \]
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Time = 0.04 (sec) , antiderivative size = 103, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.294, Rules used = {344, 285, 327, 223, 212} \[ \int \frac {\left (a+\frac {b}{x}\right )^{3/2}}{x^{5/2}} \, dx=\frac {a^3 \text {arctanh}\left (\frac {\sqrt {b}}{\sqrt {x} \sqrt {a+\frac {b}{x}}}\right )}{8 b^{3/2}}-\frac {a^2 \sqrt {a+\frac {b}{x}}}{8 b \sqrt {x}}-\frac {a \sqrt {a+\frac {b}{x}}}{4 x^{3/2}}-\frac {\left (a+\frac {b}{x}\right )^{3/2}}{3 x^{3/2}} \]
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Rule 212
Rule 223
Rule 285
Rule 327
Rule 344
Rubi steps \begin{align*} \text {integral}& = -\left (2 \text {Subst}\left (\int x^2 \left (a+b x^2\right )^{3/2} \, dx,x,\frac {1}{\sqrt {x}}\right )\right ) \\ & = -\frac {\left (a+\frac {b}{x}\right )^{3/2}}{3 x^{3/2}}-a \text {Subst}\left (\int x^2 \sqrt {a+b x^2} \, dx,x,\frac {1}{\sqrt {x}}\right ) \\ & = -\frac {a \sqrt {a+\frac {b}{x}}}{4 x^{3/2}}-\frac {\left (a+\frac {b}{x}\right )^{3/2}}{3 x^{3/2}}-\frac {1}{4} a^2 \text {Subst}\left (\int \frac {x^2}{\sqrt {a+b x^2}} \, dx,x,\frac {1}{\sqrt {x}}\right ) \\ & = -\frac {a \sqrt {a+\frac {b}{x}}}{4 x^{3/2}}-\frac {\left (a+\frac {b}{x}\right )^{3/2}}{3 x^{3/2}}-\frac {a^2 \sqrt {a+\frac {b}{x}}}{8 b \sqrt {x}}+\frac {a^3 \text {Subst}\left (\int \frac {1}{\sqrt {a+b x^2}} \, dx,x,\frac {1}{\sqrt {x}}\right )}{8 b} \\ & = -\frac {a \sqrt {a+\frac {b}{x}}}{4 x^{3/2}}-\frac {\left (a+\frac {b}{x}\right )^{3/2}}{3 x^{3/2}}-\frac {a^2 \sqrt {a+\frac {b}{x}}}{8 b \sqrt {x}}+\frac {a^3 \text {Subst}\left (\int \frac {1}{1-b x^2} \, dx,x,\frac {1}{\sqrt {a+\frac {b}{x}} \sqrt {x}}\right )}{8 b} \\ & = -\frac {a \sqrt {a+\frac {b}{x}}}{4 x^{3/2}}-\frac {\left (a+\frac {b}{x}\right )^{3/2}}{3 x^{3/2}}-\frac {a^2 \sqrt {a+\frac {b}{x}}}{8 b \sqrt {x}}+\frac {a^3 \tanh ^{-1}\left (\frac {\sqrt {b}}{\sqrt {a+\frac {b}{x}} \sqrt {x}}\right )}{8 b^{3/2}} \\ \end{align*}
Time = 6.37 (sec) , antiderivative size = 93, normalized size of antiderivative = 0.90 \[ \int \frac {\left (a+\frac {b}{x}\right )^{3/2}}{x^{5/2}} \, dx=\frac {\sqrt {a+\frac {b}{x}} \sqrt {x} \left (\frac {\sqrt {b+a x} \left (-8 b^2-14 a b x-3 a^2 x^2\right )}{24 b x^3}+\frac {a^3 \text {arctanh}\left (\frac {\sqrt {b+a x}}{\sqrt {b}}\right )}{8 b^{3/2}}\right )}{\sqrt {b+a x}} \]
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Time = 0.06 (sec) , antiderivative size = 81, normalized size of antiderivative = 0.79
method | result | size |
risch | \(-\frac {\left (3 a^{2} x^{2}+14 a b x +8 b^{2}\right ) \sqrt {\frac {a x +b}{x}}}{24 x^{\frac {5}{2}} b}+\frac {a^{3} \operatorname {arctanh}\left (\frac {\sqrt {a x +b}}{\sqrt {b}}\right ) \sqrt {\frac {a x +b}{x}}\, \sqrt {x}}{8 b^{\frac {3}{2}} \sqrt {a x +b}}\) | \(81\) |
default | \(-\frac {\sqrt {\frac {a x +b}{x}}\, \left (-3 \,\operatorname {arctanh}\left (\frac {\sqrt {a x +b}}{\sqrt {b}}\right ) a^{3} x^{3}+8 b^{\frac {5}{2}} \sqrt {a x +b}+14 a \,b^{\frac {3}{2}} x \sqrt {a x +b}+3 a^{2} x^{2} \sqrt {b}\, \sqrt {a x +b}\right )}{24 x^{\frac {5}{2}} b^{\frac {3}{2}} \sqrt {a x +b}}\) | \(92\) |
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Time = 0.28 (sec) , antiderivative size = 173, normalized size of antiderivative = 1.68 \[ \int \frac {\left (a+\frac {b}{x}\right )^{3/2}}{x^{5/2}} \, dx=\left [\frac {3 \, a^{3} \sqrt {b} x^{3} \log \left (\frac {a x + 2 \, \sqrt {b} \sqrt {x} \sqrt {\frac {a x + b}{x}} + 2 \, b}{x}\right ) - 2 \, {\left (3 \, a^{2} b x^{2} + 14 \, a b^{2} x + 8 \, b^{3}\right )} \sqrt {x} \sqrt {\frac {a x + b}{x}}}{48 \, b^{2} x^{3}}, -\frac {3 \, a^{3} \sqrt {-b} x^{3} \arctan \left (\frac {\sqrt {-b} \sqrt {x} \sqrt {\frac {a x + b}{x}}}{b}\right ) + {\left (3 \, a^{2} b x^{2} + 14 \, a b^{2} x + 8 \, b^{3}\right )} \sqrt {x} \sqrt {\frac {a x + b}{x}}}{24 \, b^{2} x^{3}}\right ] \]
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Time = 5.52 (sec) , antiderivative size = 124, normalized size of antiderivative = 1.20 \[ \int \frac {\left (a+\frac {b}{x}\right )^{3/2}}{x^{5/2}} \, dx=- \frac {a^{\frac {5}{2}}}{8 b \sqrt {x} \sqrt {1 + \frac {b}{a x}}} - \frac {17 a^{\frac {3}{2}}}{24 x^{\frac {3}{2}} \sqrt {1 + \frac {b}{a x}}} - \frac {11 \sqrt {a} b}{12 x^{\frac {5}{2}} \sqrt {1 + \frac {b}{a x}}} + \frac {a^{3} \operatorname {asinh}{\left (\frac {\sqrt {b}}{\sqrt {a} \sqrt {x}} \right )}}{8 b^{\frac {3}{2}}} - \frac {b^{2}}{3 \sqrt {a} x^{\frac {7}{2}} \sqrt {1 + \frac {b}{a x}}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 159 vs. \(2 (75) = 150\).
Time = 0.28 (sec) , antiderivative size = 159, normalized size of antiderivative = 1.54 \[ \int \frac {\left (a+\frac {b}{x}\right )^{3/2}}{x^{5/2}} \, dx=-\frac {a^{3} \log \left (\frac {\sqrt {a + \frac {b}{x}} \sqrt {x} - \sqrt {b}}{\sqrt {a + \frac {b}{x}} \sqrt {x} + \sqrt {b}}\right )}{16 \, b^{\frac {3}{2}}} - \frac {3 \, {\left (a + \frac {b}{x}\right )}^{\frac {5}{2}} a^{3} x^{\frac {5}{2}} + 8 \, {\left (a + \frac {b}{x}\right )}^{\frac {3}{2}} a^{3} b x^{\frac {3}{2}} - 3 \, \sqrt {a + \frac {b}{x}} a^{3} b^{2} \sqrt {x}}{24 \, {\left ({\left (a + \frac {b}{x}\right )}^{3} b x^{3} - 3 \, {\left (a + \frac {b}{x}\right )}^{2} b^{2} x^{2} + 3 \, {\left (a + \frac {b}{x}\right )} b^{3} x - b^{4}\right )}} \]
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Time = 0.32 (sec) , antiderivative size = 84, normalized size of antiderivative = 0.82 \[ \int \frac {\left (a+\frac {b}{x}\right )^{3/2}}{x^{5/2}} \, dx=-\frac {\frac {3 \, a^{4} \arctan \left (\frac {\sqrt {a x + b}}{\sqrt {-b}}\right )}{\sqrt {-b} b} + \frac {3 \, {\left (a x + b\right )}^{\frac {5}{2}} a^{4} + 8 \, {\left (a x + b\right )}^{\frac {3}{2}} a^{4} b - 3 \, \sqrt {a x + b} a^{4} b^{2}}{a^{3} b x^{3}}}{24 \, a} \]
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Timed out. \[ \int \frac {\left (a+\frac {b}{x}\right )^{3/2}}{x^{5/2}} \, dx=\int \frac {{\left (a+\frac {b}{x}\right )}^{3/2}}{x^{5/2}} \,d x \]
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