Integrand size = 23, antiderivative size = 12 \[ \int \frac {3 x^2}{2 \left (1+x^3+\sqrt {1+x^3}\right )} \, dx=\log \left (1+\sqrt {1+x^3}\right ) \]
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Time = 0.04 (sec) , antiderivative size = 12, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.130, Rules used = {12, 2186, 31} \[ \int \frac {3 x^2}{2 \left (1+x^3+\sqrt {1+x^3}\right )} \, dx=\log \left (\sqrt {x^3+1}+1\right ) \]
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Rule 12
Rule 31
Rule 2186
Rubi steps \begin{align*} \text {integral}& = \frac {3}{2} \int \frac {x^2}{1+x^3+\sqrt {1+x^3}} \, dx \\ & = \frac {1}{2} \text {Subst}\left (\int \frac {1}{1+x+\sqrt {1+x}} \, dx,x,x^3\right ) \\ & = \text {Subst}\left (\int \frac {1}{1+x} \, dx,x,\sqrt {1+x^3}\right ) \\ & = \log \left (1+\sqrt {1+x^3}\right ) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 12, normalized size of antiderivative = 1.00 \[ \int \frac {3 x^2}{2 \left (1+x^3+\sqrt {1+x^3}\right )} \, dx=\log \left (1+\sqrt {1+x^3}\right ) \]
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Time = 0.33 (sec) , antiderivative size = 20, normalized size of antiderivative = 1.67
method | result | size |
trager | \(\frac {\ln \left (-x^{3}-2 \sqrt {x^{3}+1}-2\right )}{2}\) | \(20\) |
default | \(-\frac {\ln \left (1+x \right )}{2}+\frac {3 \ln \left (x \right )}{2}-\frac {\ln \left (x^{2}-x +1\right )}{2}+\frac {\ln \left (x^{3}+1\right )}{2}+\operatorname {arctanh}\left (\sqrt {x^{3}+1}\right )\) | \(39\) |
elliptic | \(\frac {\left (1+\sqrt {x^{3}+1}\right ) \sqrt {x^{3}+1}\, \left (\frac {3 \ln \left (x \right )}{2}+\operatorname {arctanh}\left (\sqrt {x^{3}+1}\right )\right )}{1+x^{3}+\sqrt {x^{3}+1}}\) | \(45\) |
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Leaf count of result is larger than twice the leaf count of optimal. 29 vs. \(2 (10) = 20\).
Time = 0.24 (sec) , antiderivative size = 29, normalized size of antiderivative = 2.42 \[ \int \frac {3 x^2}{2 \left (1+x^3+\sqrt {1+x^3}\right )} \, dx=\frac {3}{2} \, \log \left (x\right ) + \frac {1}{2} \, \log \left (\sqrt {x^{3} + 1} + 1\right ) - \frac {1}{2} \, \log \left (\sqrt {x^{3} + 1} - 1\right ) \]
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Leaf count of result is larger than twice the leaf count of optimal. 48 vs. \(2 (10) = 20\).
Time = 49.82 (sec) , antiderivative size = 48, normalized size of antiderivative = 4.00 \[ \int \frac {3 x^2}{2 \left (1+x^3+\sqrt {1+x^3}\right )} \, dx=- \frac {\log {\left (2 \sqrt {x^{3} + 1} \right )}}{2} + \frac {\log {\left (2 \sqrt {x^{3} + 1} + 2 \right )}}{2} + \frac {\log {\left (3 x^{3} + 3 \sqrt {x^{3} + 1} + 3 \right )}}{2} \]
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Leaf count of result is larger than twice the leaf count of optimal. 40 vs. \(2 (10) = 20\).
Time = 0.28 (sec) , antiderivative size = 40, normalized size of antiderivative = 3.33 \[ \int \frac {3 x^2}{2 \left (1+x^3+\sqrt {1+x^3}\right )} \, dx=-\frac {1}{2} \, \log \left (x^{2} - x + 1\right ) + \log \left (\frac {x^{3} + \sqrt {x^{2} - x + 1} \sqrt {x + 1} + 1}{\sqrt {x + 1}}\right ) \]
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none
Time = 0.27 (sec) , antiderivative size = 10, normalized size of antiderivative = 0.83 \[ \int \frac {3 x^2}{2 \left (1+x^3+\sqrt {1+x^3}\right )} \, dx=\log \left (\sqrt {x^{3} + 1} + 1\right ) \]
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Time = 0.06 (sec) , antiderivative size = 169, normalized size of antiderivative = 14.08 \[ \int \frac {3 x^2}{2 \left (1+x^3+\sqrt {1+x^3}\right )} \, dx=\frac {3\,\ln \left (x\right )}{2}+\frac {3\,\left (\frac {3}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}\right )\,\sqrt {\frac {x-\frac {1}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}}{-\frac {3}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}}}\,\sqrt {\frac {x+1}{\frac {3}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}}}\,\sqrt {\frac {\frac {1}{2}-x+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}}{\frac {3}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}}}\,\Pi \left (\frac {3}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2};\mathrm {asin}\left (\sqrt {\frac {x+1}{\frac {3}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}}}\right )\middle |-\frac {\frac {3}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}}{-\frac {3}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}}\right )}{\sqrt {x^3+\left (-\left (-\frac {1}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}\right )\,\left (\frac {1}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}\right )-1\right )\,x-\left (-\frac {1}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}\right )\,\left (\frac {1}{2}+\frac {\sqrt {3}\,1{}\mathrm {i}}{2}\right )}} \]
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