Integrand size = 18, antiderivative size = 16 \[ \int \frac {1+x^2}{x \sqrt {1+x^4}} \, dx=\text {arctanh}\left (\frac {-1+x^2}{\sqrt {1+x^4}}\right ) \]
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Time = 0.02 (sec) , antiderivative size = 23, normalized size of antiderivative = 1.44, number of steps used = 6, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.333, Rules used = {1266, 858, 221, 272, 65, 213} \[ \int \frac {1+x^2}{x \sqrt {1+x^4}} \, dx=\frac {\text {arcsinh}\left (x^2\right )}{2}-\frac {1}{2} \text {arctanh}\left (\sqrt {x^4+1}\right ) \]
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Rule 65
Rule 213
Rule 221
Rule 272
Rule 858
Rule 1266
Rubi steps \begin{align*} \text {integral}& = \frac {1}{2} \text {Subst}\left (\int \frac {1+x}{x \sqrt {1+x^2}} \, dx,x,x^2\right ) \\ & = \frac {1}{2} \text {Subst}\left (\int \frac {1}{\sqrt {1+x^2}} \, dx,x,x^2\right )+\frac {1}{2} \text {Subst}\left (\int \frac {1}{x \sqrt {1+x^2}} \, dx,x,x^2\right ) \\ & = \frac {\text {arcsinh}\left (x^2\right )}{2}+\frac {1}{4} \text {Subst}\left (\int \frac {1}{x \sqrt {1+x}} \, dx,x,x^4\right ) \\ & = \frac {\text {arcsinh}\left (x^2\right )}{2}+\frac {1}{2} \text {Subst}\left (\int \frac {1}{-1+x^2} \, dx,x,\sqrt {1+x^4}\right ) \\ & = \frac {\text {arcsinh}\left (x^2\right )}{2}-\frac {1}{2} \text {arctanh}\left (\sqrt {1+x^4}\right ) \\ \end{align*}
Leaf count is larger than twice the leaf count of optimal. \(41\) vs. \(2(16)=32\).
Time = 0.09 (sec) , antiderivative size = 41, normalized size of antiderivative = 2.56 \[ \int \frac {1+x^2}{x \sqrt {1+x^4}} \, dx=\text {arctanh}\left (1+2 x^2-2 \sqrt {1+x^4}\right )-\frac {1}{2} \log \left (1-x^2+\sqrt {1+x^4}\right ) \]
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Time = 0.32 (sec) , antiderivative size = 18, normalized size of antiderivative = 1.12
method | result | size |
default | \(\frac {\operatorname {arcsinh}\left (x^{2}\right )}{2}-\frac {\operatorname {arctanh}\left (\frac {1}{\sqrt {x^{4}+1}}\right )}{2}\) | \(18\) |
trager | \(\ln \left (\frac {x^{2}+\sqrt {x^{4}+1}-1}{x}\right )\) | \(18\) |
elliptic | \(\frac {\operatorname {arcsinh}\left (x^{2}\right )}{2}-\frac {\operatorname {arctanh}\left (\frac {1}{\sqrt {x^{4}+1}}\right )}{2}\) | \(18\) |
pseudoelliptic | \(\frac {\operatorname {arcsinh}\left (x^{2}\right )}{2}-\frac {\operatorname {arctanh}\left (\frac {1}{\sqrt {x^{4}+1}}\right )}{2}\) | \(18\) |
meijerg | \(\frac {\operatorname {arcsinh}\left (x^{2}\right )}{2}+\frac {\left (-2 \ln \left (2\right )+4 \ln \left (x \right )\right ) \sqrt {\pi }-2 \sqrt {\pi }\, \ln \left (\frac {1}{2}+\frac {\sqrt {x^{4}+1}}{2}\right )}{4 \sqrt {\pi }}\) | \(44\) |
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Leaf count of result is larger than twice the leaf count of optimal. 49 vs. \(2 (14) = 28\).
Time = 0.24 (sec) , antiderivative size = 49, normalized size of antiderivative = 3.06 \[ \int \frac {1+x^2}{x \sqrt {1+x^4}} \, dx=-\frac {1}{2} \, \log \left (2 \, x^{4} - x^{2} - \sqrt {x^{4} + 1} {\left (2 \, x^{2} - 1\right )} + 1\right ) + \frac {1}{2} \, \log \left (-x^{2} + \sqrt {x^{4} + 1} - 1\right ) \]
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Time = 3.63 (sec) , antiderivative size = 14, normalized size of antiderivative = 0.88 \[ \int \frac {1+x^2}{x \sqrt {1+x^4}} \, dx=- \frac {\operatorname {asinh}{\left (\frac {1}{x^{2}} \right )}}{2} + \frac {\operatorname {asinh}{\left (x^{2} \right )}}{2} \]
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Leaf count of result is larger than twice the leaf count of optimal. 57 vs. \(2 (14) = 28\).
Time = 0.27 (sec) , antiderivative size = 57, normalized size of antiderivative = 3.56 \[ \int \frac {1+x^2}{x \sqrt {1+x^4}} \, dx=-\frac {1}{4} \, \log \left (\sqrt {x^{4} + 1} + 1\right ) + \frac {1}{4} \, \log \left (\sqrt {x^{4} + 1} - 1\right ) + \frac {1}{4} \, \log \left (\frac {\sqrt {x^{4} + 1}}{x^{2}} + 1\right ) - \frac {1}{4} \, \log \left (\frac {\sqrt {x^{4} + 1}}{x^{2}} - 1\right ) \]
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Leaf count of result is larger than twice the leaf count of optimal. 51 vs. \(2 (14) = 28\).
Time = 0.29 (sec) , antiderivative size = 51, normalized size of antiderivative = 3.19 \[ \int \frac {1+x^2}{x \sqrt {1+x^4}} \, dx=\frac {1}{2} \, \log \left (x^{2} - \sqrt {x^{4} + 1} + 1\right ) - \frac {1}{2} \, \log \left (-x^{2} + \sqrt {x^{4} + 1} + 1\right ) - \frac {1}{2} \, \log \left (-x^{2} + \sqrt {x^{4} + 1}\right ) \]
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Time = 0.15 (sec) , antiderivative size = 17, normalized size of antiderivative = 1.06 \[ \int \frac {1+x^2}{x \sqrt {1+x^4}} \, dx=\frac {\mathrm {asinh}\left (x^2\right )}{2}-\frac {\mathrm {atanh}\left (\sqrt {x^4+1}\right )}{2} \]
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