Integrand size = 15, antiderivative size = 92 \[ \int \frac {\left (a+\frac {b}{x^4}\right )^{5/2}}{x^3} \, dx=-\frac {5 a^2 \sqrt {a+\frac {b}{x^4}}}{32 x^2}-\frac {5 a \left (a+\frac {b}{x^4}\right )^{3/2}}{48 x^2}-\frac {\left (a+\frac {b}{x^4}\right )^{5/2}}{12 x^2}-\frac {5 a^3 \text {arctanh}\left (\frac {\sqrt {b}}{\sqrt {a+\frac {b}{x^4}} x^2}\right )}{32 \sqrt {b}} \]
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Time = 0.05 (sec) , antiderivative size = 92, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.333, Rules used = {342, 281, 201, 223, 212} \[ \int \frac {\left (a+\frac {b}{x^4}\right )^{5/2}}{x^3} \, dx=-\frac {5 a^3 \text {arctanh}\left (\frac {\sqrt {b}}{x^2 \sqrt {a+\frac {b}{x^4}}}\right )}{32 \sqrt {b}}-\frac {5 a^2 \sqrt {a+\frac {b}{x^4}}}{32 x^2}-\frac {5 a \left (a+\frac {b}{x^4}\right )^{3/2}}{48 x^2}-\frac {\left (a+\frac {b}{x^4}\right )^{5/2}}{12 x^2} \]
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Rule 201
Rule 212
Rule 223
Rule 281
Rule 342
Rubi steps \begin{align*} \text {integral}& = -\text {Subst}\left (\int x \left (a+b x^4\right )^{5/2} \, dx,x,\frac {1}{x}\right ) \\ & = -\left (\frac {1}{2} \text {Subst}\left (\int \left (a+b x^2\right )^{5/2} \, dx,x,\frac {1}{x^2}\right )\right ) \\ & = -\frac {\left (a+\frac {b}{x^4}\right )^{5/2}}{12 x^2}-\frac {1}{12} (5 a) \text {Subst}\left (\int \left (a+b x^2\right )^{3/2} \, dx,x,\frac {1}{x^2}\right ) \\ & = -\frac {5 a \left (a+\frac {b}{x^4}\right )^{3/2}}{48 x^2}-\frac {\left (a+\frac {b}{x^4}\right )^{5/2}}{12 x^2}-\frac {1}{16} \left (5 a^2\right ) \text {Subst}\left (\int \sqrt {a+b x^2} \, dx,x,\frac {1}{x^2}\right ) \\ & = -\frac {5 a^2 \sqrt {a+\frac {b}{x^4}}}{32 x^2}-\frac {5 a \left (a+\frac {b}{x^4}\right )^{3/2}}{48 x^2}-\frac {\left (a+\frac {b}{x^4}\right )^{5/2}}{12 x^2}-\frac {1}{32} \left (5 a^3\right ) \text {Subst}\left (\int \frac {1}{\sqrt {a+b x^2}} \, dx,x,\frac {1}{x^2}\right ) \\ & = -\frac {5 a^2 \sqrt {a+\frac {b}{x^4}}}{32 x^2}-\frac {5 a \left (a+\frac {b}{x^4}\right )^{3/2}}{48 x^2}-\frac {\left (a+\frac {b}{x^4}\right )^{5/2}}{12 x^2}-\frac {1}{32} \left (5 a^3\right ) \text {Subst}\left (\int \frac {1}{1-b x^2} \, dx,x,\frac {1}{\sqrt {a+\frac {b}{x^4}} x^2}\right ) \\ & = -\frac {5 a^2 \sqrt {a+\frac {b}{x^4}}}{32 x^2}-\frac {5 a \left (a+\frac {b}{x^4}\right )^{3/2}}{48 x^2}-\frac {\left (a+\frac {b}{x^4}\right )^{5/2}}{12 x^2}-\frac {5 a^3 \tanh ^{-1}\left (\frac {\sqrt {b}}{\sqrt {a+\frac {b}{x^4}} x^2}\right )}{32 \sqrt {b}} \\ \end{align*}
Time = 0.23 (sec) , antiderivative size = 81, normalized size of antiderivative = 0.88 \[ \int \frac {\left (a+\frac {b}{x^4}\right )^{5/2}}{x^3} \, dx=\frac {\sqrt {a+\frac {b}{x^4}} \left (-8 b^2-26 a b x^4-33 a^2 x^8-\frac {15 a^3 x^{12} \text {arctanh}\left (\frac {\sqrt {b+a x^4}}{\sqrt {b}}\right )}{\sqrt {b} \sqrt {b+a x^4}}\right )}{96 x^{10}} \]
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Time = 0.10 (sec) , antiderivative size = 97, normalized size of antiderivative = 1.05
method | result | size |
risch | \(-\frac {\left (33 a^{2} x^{8}+26 a b \,x^{4}+8 b^{2}\right ) \sqrt {\frac {a \,x^{4}+b}{x^{4}}}}{96 x^{10}}-\frac {5 a^{3} \ln \left (\frac {2 b +2 \sqrt {b}\, \sqrt {a \,x^{4}+b}}{x^{2}}\right ) \sqrt {\frac {a \,x^{4}+b}{x^{4}}}\, x^{2}}{32 \sqrt {b}\, \sqrt {a \,x^{4}+b}}\) | \(97\) |
default | \(-\frac {\left (\frac {a \,x^{4}+b}{x^{4}}\right )^{\frac {5}{2}} \left (15 a^{3} \ln \left (\frac {2 b +2 \sqrt {b}\, \sqrt {a \,x^{4}+b}}{x^{2}}\right ) x^{12}+33 a^{2} \sqrt {a \,x^{4}+b}\, x^{8} \sqrt {b}+26 b^{\frac {3}{2}} a \sqrt {a \,x^{4}+b}\, x^{4}+8 b^{\frac {5}{2}} \sqrt {a \,x^{4}+b}\right )}{96 x^{2} \left (a \,x^{4}+b \right )^{\frac {5}{2}} \sqrt {b}}\) | \(113\) |
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Time = 0.28 (sec) , antiderivative size = 182, normalized size of antiderivative = 1.98 \[ \int \frac {\left (a+\frac {b}{x^4}\right )^{5/2}}{x^3} \, dx=\left [\frac {15 \, a^{3} \sqrt {b} x^{10} \log \left (\frac {a x^{4} - 2 \, \sqrt {b} x^{2} \sqrt {\frac {a x^{4} + b}{x^{4}}} + 2 \, b}{x^{4}}\right ) - 2 \, {\left (33 \, a^{2} b x^{8} + 26 \, a b^{2} x^{4} + 8 \, b^{3}\right )} \sqrt {\frac {a x^{4} + b}{x^{4}}}}{192 \, b x^{10}}, \frac {15 \, a^{3} \sqrt {-b} x^{10} \arctan \left (\frac {\sqrt {-b} x^{2} \sqrt {\frac {a x^{4} + b}{x^{4}}}}{b}\right ) - {\left (33 \, a^{2} b x^{8} + 26 \, a b^{2} x^{4} + 8 \, b^{3}\right )} \sqrt {\frac {a x^{4} + b}{x^{4}}}}{96 \, b x^{10}}\right ] \]
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Time = 2.76 (sec) , antiderivative size = 102, normalized size of antiderivative = 1.11 \[ \int \frac {\left (a+\frac {b}{x^4}\right )^{5/2}}{x^3} \, dx=- \frac {11 a^{\frac {5}{2}} \sqrt {1 + \frac {b}{a x^{4}}}}{32 x^{2}} - \frac {13 a^{\frac {3}{2}} b \sqrt {1 + \frac {b}{a x^{4}}}}{48 x^{6}} - \frac {\sqrt {a} b^{2} \sqrt {1 + \frac {b}{a x^{4}}}}{12 x^{10}} - \frac {5 a^{3} \operatorname {asinh}{\left (\frac {\sqrt {b}}{\sqrt {a} x^{2}} \right )}}{32 \sqrt {b}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 158 vs. \(2 (72) = 144\).
Time = 0.29 (sec) , antiderivative size = 158, normalized size of antiderivative = 1.72 \[ \int \frac {\left (a+\frac {b}{x^4}\right )^{5/2}}{x^3} \, dx=\frac {5 \, a^{3} \log \left (\frac {\sqrt {a + \frac {b}{x^{4}}} x^{2} - \sqrt {b}}{\sqrt {a + \frac {b}{x^{4}}} x^{2} + \sqrt {b}}\right )}{64 \, \sqrt {b}} - \frac {33 \, {\left (a + \frac {b}{x^{4}}\right )}^{\frac {5}{2}} a^{3} x^{10} - 40 \, {\left (a + \frac {b}{x^{4}}\right )}^{\frac {3}{2}} a^{3} b x^{6} + 15 \, \sqrt {a + \frac {b}{x^{4}}} a^{3} b^{2} x^{2}}{96 \, {\left ({\left (a + \frac {b}{x^{4}}\right )}^{3} x^{12} - 3 \, {\left (a + \frac {b}{x^{4}}\right )}^{2} b x^{8} + 3 \, {\left (a + \frac {b}{x^{4}}\right )} b^{2} x^{4} - b^{3}\right )}} \]
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Time = 0.29 (sec) , antiderivative size = 87, normalized size of antiderivative = 0.95 \[ \int \frac {\left (a+\frac {b}{x^4}\right )^{5/2}}{x^3} \, dx=\frac {\frac {15 \, a^{4} \arctan \left (\frac {\sqrt {a x^{4} + b}}{\sqrt {-b}}\right )}{\sqrt {-b}} - \frac {33 \, {\left (a x^{4} + b\right )}^{\frac {5}{2}} a^{4} - 40 \, {\left (a x^{4} + b\right )}^{\frac {3}{2}} a^{4} b + 15 \, \sqrt {a x^{4} + b} a^{4} b^{2}}{a^{3} x^{12}}}{96 \, a} \]
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Timed out. \[ \int \frac {\left (a+\frac {b}{x^4}\right )^{5/2}}{x^3} \, dx=\int \frac {{\left (a+\frac {b}{x^4}\right )}^{5/2}}{x^3} \,d x \]
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