Integrand size = 13, antiderivative size = 25 \[ \int \frac {1}{x \left (1+x^2\right )^{3/4}} \, dx=-\arctan \left (\sqrt [4]{1+x^2}\right )-\text {arctanh}\left (\sqrt [4]{1+x^2}\right ) \]
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Time = 0.01 (sec) , antiderivative size = 25, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.385, Rules used = {272, 65, 218, 212, 209} \[ \int \frac {1}{x \left (1+x^2\right )^{3/4}} \, dx=-\arctan \left (\sqrt [4]{x^2+1}\right )-\text {arctanh}\left (\sqrt [4]{x^2+1}\right ) \]
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Rule 65
Rule 209
Rule 212
Rule 218
Rule 272
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int \frac {1}{x (1+x)^{3/4}} \, dx,x,x^2\right ) \\ & = 2 \text {Subst}\left (\int \frac {1}{-1+x^4} \, dx,x,\sqrt [4]{1+x^2}\right ) \\ & = -\text {Subst}\left (\int \frac {1}{1-x^2} \, dx,x,\sqrt [4]{1+x^2}\right )-\text {Subst}\left (\int \frac {1}{1+x^2} \, dx,x,\sqrt [4]{1+x^2}\right ) \\ & = -\arctan \left (\sqrt [4]{1+x^2}\right )-\text {arctanh}\left (\sqrt [4]{1+x^2}\right ) \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 25, normalized size of antiderivative = 1.00 \[ \int \frac {1}{x \left (1+x^2\right )^{3/4}} \, dx=-\arctan \left (\sqrt [4]{1+x^2}\right )-\text {arctanh}\left (\sqrt [4]{1+x^2}\right ) \]
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Time = 1.38 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.88
method | result | size |
pseudoelliptic | \(-\arctan \left (\left (x^{2}+1\right )^{\frac {1}{4}}\right )-\operatorname {arctanh}\left (\left (x^{2}+1\right )^{\frac {1}{4}}\right )\) | \(22\) |
meijerg | \(\frac {-\frac {3 \Gamma \left (\frac {3}{4}\right ) x^{2} \operatorname {hypergeom}\left (\left [1, 1, \frac {7}{4}\right ], \left [2, 2\right ], -x^{2}\right )}{4}+\left (-3 \ln \left (2\right )+\frac {\pi }{2}+2 \ln \left (x \right )\right ) \Gamma \left (\frac {3}{4}\right )}{2 \Gamma \left (\frac {3}{4}\right )}\) | \(43\) |
trager | \(-\frac {\ln \left (-\frac {2 \left (x^{2}+1\right )^{\frac {3}{4}}+2 \sqrt {x^{2}+1}+x^{2}+2 \left (x^{2}+1\right )^{\frac {1}{4}}+2}{x^{2}}\right )}{2}+\frac {\operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) \ln \left (\frac {2 \operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) \sqrt {x^{2}+1}-\operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right ) x^{2}-2 \left (x^{2}+1\right )^{\frac {3}{4}}-2 \operatorname {RootOf}\left (\textit {\_Z}^{2}+1\right )+2 \left (x^{2}+1\right )^{\frac {1}{4}}}{x^{2}}\right )}{2}\) | \(108\) |
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Time = 0.24 (sec) , antiderivative size = 35, normalized size of antiderivative = 1.40 \[ \int \frac {1}{x \left (1+x^2\right )^{3/4}} \, dx=-\arctan \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}}\right ) - \frac {1}{2} \, \log \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}} + 1\right ) + \frac {1}{2} \, \log \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}} - 1\right ) \]
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Result contains complex when optimal does not.
Time = 0.45 (sec) , antiderivative size = 32, normalized size of antiderivative = 1.28 \[ \int \frac {1}{x \left (1+x^2\right )^{3/4}} \, dx=- \frac {\Gamma \left (\frac {3}{4}\right ) {{}_{2}F_{1}\left (\begin {matrix} \frac {3}{4}, \frac {3}{4} \\ \frac {7}{4} \end {matrix}\middle | {\frac {e^{i \pi }}{x^{2}}} \right )}}{2 x^{\frac {3}{2}} \Gamma \left (\frac {7}{4}\right )} \]
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Time = 0.28 (sec) , antiderivative size = 35, normalized size of antiderivative = 1.40 \[ \int \frac {1}{x \left (1+x^2\right )^{3/4}} \, dx=-\arctan \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}}\right ) - \frac {1}{2} \, \log \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}} + 1\right ) + \frac {1}{2} \, \log \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}} - 1\right ) \]
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Time = 0.26 (sec) , antiderivative size = 35, normalized size of antiderivative = 1.40 \[ \int \frac {1}{x \left (1+x^2\right )^{3/4}} \, dx=-\arctan \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}}\right ) - \frac {1}{2} \, \log \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}} + 1\right ) + \frac {1}{2} \, \log \left ({\left (x^{2} + 1\right )}^{\frac {1}{4}} - 1\right ) \]
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Time = 5.02 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.84 \[ \int \frac {1}{x \left (1+x^2\right )^{3/4}} \, dx=-\mathrm {atan}\left ({\left (x^2+1\right )}^{1/4}\right )-\mathrm {atanh}\left ({\left (x^2+1\right )}^{1/4}\right ) \]
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