Integrand size = 9, antiderivative size = 46 \[ \int \frac {1}{\sqrt [3]{2+x^3}} \, dx=\frac {\arctan \left (\frac {1+\frac {2 x}{\sqrt [3]{2+x^3}}}{\sqrt {3}}\right )}{\sqrt {3}}-\frac {1}{2} \log \left (-x+\sqrt [3]{2+x^3}\right ) \]
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Time = 0.00 (sec) , antiderivative size = 46, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.111, Rules used = {245} \[ \int \frac {1}{\sqrt [3]{2+x^3}} \, dx=\frac {\arctan \left (\frac {\frac {2 x}{\sqrt [3]{x^3+2}}+1}{\sqrt {3}}\right )}{\sqrt {3}}-\frac {1}{2} \log \left (\sqrt [3]{x^3+2}-x\right ) \]
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Rule 245
Rubi steps \begin{align*} \text {integral}& = \frac {\tan ^{-1}\left (\frac {1+\frac {2 x}{\sqrt [3]{2+x^3}}}{\sqrt {3}}\right )}{\sqrt {3}}-\frac {1}{2} \log \left (-x+\sqrt [3]{2+x^3}\right ) \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 78, normalized size of antiderivative = 1.70 \[ \int \frac {1}{\sqrt [3]{2+x^3}} \, dx=\frac {\arctan \left (\frac {1+\frac {2 x}{\sqrt [3]{2+x^3}}}{\sqrt {3}}\right )}{\sqrt {3}}-\frac {1}{3} \log \left (1-\frac {x}{\sqrt [3]{2+x^3}}\right )+\frac {1}{6} \log \left (1+\frac {x^2}{\left (2+x^3\right )^{2/3}}+\frac {x}{\sqrt [3]{2+x^3}}\right ) \]
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Result contains higher order function than in optimal. Order 5 vs. order 3.
Time = 4.58 (sec) , antiderivative size = 18, normalized size of antiderivative = 0.39
method | result | size |
meijerg | \(\frac {2^{\frac {2}{3}} x {}_{2}^{}{\moversetsp {}{\mundersetsp {}{F_{1}^{}}}}\left (\frac {1}{3},\frac {1}{3};\frac {4}{3};-\frac {x^{3}}{2}\right )}{2}\) | \(18\) |
pseudoelliptic | \(-\frac {\ln \left (\frac {-x +\left (x^{3}+2\right )^{\frac {1}{3}}}{x}\right )}{3}+\frac {\ln \left (\frac {\left (x^{3}+2\right )^{\frac {2}{3}}+\left (x^{3}+2\right )^{\frac {1}{3}} x +x^{2}}{x^{2}}\right )}{6}-\frac {\sqrt {3}\, \arctan \left (\frac {\left (x +2 \left (x^{3}+2\right )^{\frac {1}{3}}\right ) \sqrt {3}}{3 x}\right )}{3}\) | \(72\) |
trager | \(-\frac {\ln \left (-2 \operatorname {RootOf}\left (\textit {\_Z}^{2}-\textit {\_Z} +1\right )^{2} x^{3}-3 \operatorname {RootOf}\left (\textit {\_Z}^{2}-\textit {\_Z} +1\right ) \left (x^{3}+2\right )^{\frac {2}{3}} x +5 \operatorname {RootOf}\left (\textit {\_Z}^{2}-\textit {\_Z} +1\right ) x^{3}+3 \left (x^{3}+2\right )^{\frac {2}{3}} x -3 \left (x^{3}+2\right )^{\frac {1}{3}} x^{2}-2 x^{3}+4 \operatorname {RootOf}\left (\textit {\_Z}^{2}-\textit {\_Z} +1\right )-2\right )}{3}+\frac {\operatorname {RootOf}\left (\textit {\_Z}^{2}-\textit {\_Z} +1\right ) \ln \left (\operatorname {RootOf}\left (\textit {\_Z}^{2}-\textit {\_Z} +1\right )^{2} x^{3}+3 \operatorname {RootOf}\left (\textit {\_Z}^{2}-\textit {\_Z} +1\right ) \left (x^{3}+2\right )^{\frac {2}{3}} x -3 \operatorname {RootOf}\left (\textit {\_Z}^{2}-\textit {\_Z} +1\right ) \left (x^{3}+2\right )^{\frac {1}{3}} x^{2}-\operatorname {RootOf}\left (\textit {\_Z}^{2}-\textit {\_Z} +1\right ) x^{3}+3 \left (x^{3}+2\right )^{\frac {1}{3}} x^{2}-2 x^{3}+2 \operatorname {RootOf}\left (\textit {\_Z}^{2}-\textit {\_Z} +1\right )-4\right )}{3}\) | \(205\) |
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none
Time = 0.47 (sec) , antiderivative size = 76, normalized size of antiderivative = 1.65 \[ \int \frac {1}{\sqrt [3]{2+x^3}} \, dx=-\frac {1}{3} \, \sqrt {3} \arctan \left (\frac {\sqrt {3} x + 2 \, \sqrt {3} {\left (x^{3} + 2\right )}^{\frac {1}{3}}}{3 \, x}\right ) - \frac {1}{3} \, \log \left (-\frac {x - {\left (x^{3} + 2\right )}^{\frac {1}{3}}}{x}\right ) + \frac {1}{6} \, \log \left (\frac {x^{2} + {\left (x^{3} + 2\right )}^{\frac {1}{3}} x + {\left (x^{3} + 2\right )}^{\frac {2}{3}}}{x^{2}}\right ) \]
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Result contains complex when optimal does not.
Time = 0.44 (sec) , antiderivative size = 34, normalized size of antiderivative = 0.74 \[ \int \frac {1}{\sqrt [3]{2+x^3}} \, dx=\frac {2^{\frac {2}{3}} x \Gamma \left (\frac {1}{3}\right ) {{}_{2}F_{1}\left (\begin {matrix} \frac {1}{3}, \frac {1}{3} \\ \frac {4}{3} \end {matrix}\middle | {\frac {x^{3} e^{i \pi }}{2}} \right )}}{6 \Gamma \left (\frac {4}{3}\right )} \]
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Time = 0.30 (sec) , antiderivative size = 69, normalized size of antiderivative = 1.50 \[ \int \frac {1}{\sqrt [3]{2+x^3}} \, dx=-\frac {1}{3} \, \sqrt {3} \arctan \left (\frac {1}{3} \, \sqrt {3} {\left (\frac {2 \, {\left (x^{3} + 2\right )}^{\frac {1}{3}}}{x} + 1\right )}\right ) + \frac {1}{6} \, \log \left (\frac {{\left (x^{3} + 2\right )}^{\frac {1}{3}}}{x} + \frac {{\left (x^{3} + 2\right )}^{\frac {2}{3}}}{x^{2}} + 1\right ) - \frac {1}{3} \, \log \left (\frac {{\left (x^{3} + 2\right )}^{\frac {1}{3}}}{x} - 1\right ) \]
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\[ \int \frac {1}{\sqrt [3]{2+x^3}} \, dx=\int { \frac {1}{{\left (x^{3} + 2\right )}^{\frac {1}{3}}} \,d x } \]
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Time = 5.80 (sec) , antiderivative size = 16, normalized size of antiderivative = 0.35 \[ \int \frac {1}{\sqrt [3]{2+x^3}} \, dx=\frac {2^{2/3}\,x\,{{}}_2{\mathrm {F}}_1\left (\frac {1}{3},\frac {1}{3};\ \frac {4}{3};\ -\frac {x^3}{2}\right )}{2} \]
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