Integrand size = 13, antiderivative size = 41 \[ \int \frac {x^9}{\left (1+x^4\right )^{3/2}} \, dx=-\frac {x^6}{2 \sqrt {1+x^4}}+\frac {3}{4} x^2 \sqrt {1+x^4}-\frac {3 \text {arcsinh}\left (x^2\right )}{4} \]
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Time = 0.02 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.308, Rules used = {281, 294, 327, 221} \[ \int \frac {x^9}{\left (1+x^4\right )^{3/2}} \, dx=-\frac {3 \text {arcsinh}\left (x^2\right )}{4}-\frac {x^6}{2 \sqrt {x^4+1}}+\frac {3}{4} \sqrt {x^4+1} x^2 \]
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Rule 221
Rule 281
Rule 294
Rule 327
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int \frac {x^4}{\left (1+x^2\right )^{3/2}} \, dx,x,x^2\right ) \\ & = -\frac {x^6}{2 \sqrt {1+x^4}}+\frac {3}{2} \text {Subst}\left (\int \frac {x^2}{\sqrt {1+x^2}} \, dx,x,x^2\right ) \\ & = -\frac {x^6}{2 \sqrt {1+x^4}}+\frac {3}{4} x^2 \sqrt {1+x^4}-\frac {3}{4} \text {Subst}\left (\int \frac {1}{\sqrt {1+x^2}} \, dx,x,x^2\right ) \\ & = -\frac {x^6}{2 \sqrt {1+x^4}}+\frac {3}{4} x^2 \sqrt {1+x^4}-\frac {3}{4} \sinh ^{-1}\left (x^2\right ) \\ \end{align*}
Time = 0.18 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.00 \[ \int \frac {x^9}{\left (1+x^4\right )^{3/2}} \, dx=\frac {3 x^2+x^6}{4 \sqrt {1+x^4}}-\frac {3}{4} \log \left (x^2+\sqrt {1+x^4}\right ) \]
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Time = 4.25 (sec) , antiderivative size = 25, normalized size of antiderivative = 0.61
method | result | size |
risch | \(\frac {x^{2} \left (x^{4}+3\right )}{4 \sqrt {x^{4}+1}}-\frac {3 \,\operatorname {arcsinh}\left (x^{2}\right )}{4}\) | \(25\) |
default | \(\frac {x^{6}}{4 \sqrt {x^{4}+1}}+\frac {3 x^{2}}{4 \sqrt {x^{4}+1}}-\frac {3 \,\operatorname {arcsinh}\left (x^{2}\right )}{4}\) | \(32\) |
elliptic | \(\frac {x^{6}}{4 \sqrt {x^{4}+1}}+\frac {3 x^{2}}{4 \sqrt {x^{4}+1}}-\frac {3 \,\operatorname {arcsinh}\left (x^{2}\right )}{4}\) | \(32\) |
pseudoelliptic | \(\frac {x^{6}-3 \,\operatorname {arcsinh}\left (x^{2}\right ) \sqrt {x^{4}+1}+3 x^{2}}{4 \sqrt {x^{4}+1}}\) | \(32\) |
trager | \(\frac {x^{2} \left (x^{4}+3\right )}{4 \sqrt {x^{4}+1}}+\frac {3 \ln \left (x^{2}-\sqrt {x^{4}+1}\right )}{4}\) | \(35\) |
meijerg | \(\frac {\frac {\sqrt {\pi }\, x^{2} \left (5 x^{4}+15\right )}{10 \sqrt {x^{4}+1}}-\frac {3 \sqrt {\pi }\, \operatorname {arcsinh}\left (x^{2}\right )}{2}}{2 \sqrt {\pi }}\) | \(38\) |
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Time = 0.27 (sec) , antiderivative size = 54, normalized size of antiderivative = 1.32 \[ \int \frac {x^9}{\left (1+x^4\right )^{3/2}} \, dx=\frac {2 \, x^{4} + 3 \, {\left (x^{4} + 1\right )} \log \left (-x^{2} + \sqrt {x^{4} + 1}\right ) + {\left (x^{6} + 3 \, x^{2}\right )} \sqrt {x^{4} + 1} + 2}{4 \, {\left (x^{4} + 1\right )}} \]
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Time = 1.50 (sec) , antiderivative size = 36, normalized size of antiderivative = 0.88 \[ \int \frac {x^9}{\left (1+x^4\right )^{3/2}} \, dx=\frac {x^{6}}{4 \sqrt {x^{4} + 1}} + \frac {3 x^{2}}{4 \sqrt {x^{4} + 1}} - \frac {3 \operatorname {asinh}{\left (x^{2} \right )}}{4} \]
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Leaf count of result is larger than twice the leaf count of optimal. 73 vs. \(2 (31) = 62\).
Time = 0.25 (sec) , antiderivative size = 73, normalized size of antiderivative = 1.78 \[ \int \frac {x^9}{\left (1+x^4\right )^{3/2}} \, dx=-\frac {\frac {3 \, {\left (x^{4} + 1\right )}}{x^{4}} - 2}{4 \, {\left (\frac {\sqrt {x^{4} + 1}}{x^{2}} - \frac {{\left (x^{4} + 1\right )}^{\frac {3}{2}}}{x^{6}}\right )}} - \frac {3}{8} \, \log \left (\frac {\sqrt {x^{4} + 1}}{x^{2}} + 1\right ) + \frac {3}{8} \, \log \left (\frac {\sqrt {x^{4} + 1}}{x^{2}} - 1\right ) \]
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Time = 0.31 (sec) , antiderivative size = 34, normalized size of antiderivative = 0.83 \[ \int \frac {x^9}{\left (1+x^4\right )^{3/2}} \, dx=\frac {{\left (x^{4} + 3\right )} x^{2}}{4 \, \sqrt {x^{4} + 1}} + \frac {3}{4} \, \log \left (-x^{2} + \sqrt {x^{4} + 1}\right ) \]
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Timed out. \[ \int \frac {x^9}{\left (1+x^4\right )^{3/2}} \, dx=\int \frac {x^9}{{\left (x^4+1\right )}^{3/2}} \,d x \]
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