Integrand size = 12, antiderivative size = 278 \[ \int e^{\frac {1}{3} i \arctan (x)} x \, dx=\frac {1}{6} (1-i x)^{5/6} \sqrt [6]{1+i x}+\frac {1}{2} (1-i x)^{5/6} (1+i x)^{7/6}-\frac {1}{18} \arctan \left (\sqrt {3}-\frac {2 \sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )+\frac {1}{18} \arctan \left (\sqrt {3}+\frac {2 \sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )+\frac {1}{9} \arctan \left (\frac {\sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )+\frac {\log \left (1+\frac {\sqrt [3]{1-i x}}{\sqrt [3]{1+i x}}-\frac {\sqrt {3} \sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )}{12 \sqrt {3}}-\frac {\log \left (1+\frac {\sqrt [3]{1-i x}}{\sqrt [3]{1+i x}}+\frac {\sqrt {3} \sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )}{12 \sqrt {3}} \]
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Time = 0.25 (sec) , antiderivative size = 278, normalized size of antiderivative = 1.00, number of steps used = 15, number of rules used = 11, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.917, Rules used = {5170, 81, 52, 65, 338, 301, 648, 632, 210, 642, 209} \[ \int e^{\frac {1}{3} i \arctan (x)} x \, dx=-\frac {1}{18} \arctan \left (\sqrt {3}-\frac {2 \sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )+\frac {1}{18} \arctan \left (\sqrt {3}+\frac {2 \sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )+\frac {1}{9} \arctan \left (\frac {\sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )+\frac {1}{2} (1-i x)^{5/6} (1+i x)^{7/6}+\frac {1}{6} (1-i x)^{5/6} \sqrt [6]{1+i x}+\frac {\log \left (\frac {\sqrt [3]{1-i x}}{\sqrt [3]{1+i x}}-\frac {\sqrt {3} \sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}+1\right )}{12 \sqrt {3}}-\frac {\log \left (\frac {\sqrt [3]{1-i x}}{\sqrt [3]{1+i x}}+\frac {\sqrt {3} \sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}+1\right )}{12 \sqrt {3}} \]
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Rule 52
Rule 65
Rule 81
Rule 209
Rule 210
Rule 301
Rule 338
Rule 632
Rule 642
Rule 648
Rule 5170
Rubi steps \begin{align*} \text {integral}& = \int \frac {\sqrt [6]{1+i x} x}{\sqrt [6]{1-i x}} \, dx \\ & = \frac {1}{2} (1-i x)^{5/6} (1+i x)^{7/6}-\frac {1}{6} i \int \frac {\sqrt [6]{1+i x}}{\sqrt [6]{1-i x}} \, dx \\ & = \frac {1}{6} (1-i x)^{5/6} \sqrt [6]{1+i x}+\frac {1}{2} (1-i x)^{5/6} (1+i x)^{7/6}-\frac {1}{18} i \int \frac {1}{\sqrt [6]{1-i x} (1+i x)^{5/6}} \, dx \\ & = \frac {1}{6} (1-i x)^{5/6} \sqrt [6]{1+i x}+\frac {1}{2} (1-i x)^{5/6} (1+i x)^{7/6}+\frac {1}{3} \text {Subst}\left (\int \frac {x^4}{\left (2-x^6\right )^{5/6}} \, dx,x,\sqrt [6]{1-i x}\right ) \\ & = \frac {1}{6} (1-i x)^{5/6} \sqrt [6]{1+i x}+\frac {1}{2} (1-i x)^{5/6} (1+i x)^{7/6}+\frac {1}{3} \text {Subst}\left (\int \frac {x^4}{1+x^6} \, dx,x,\frac {\sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right ) \\ & = \frac {1}{6} (1-i x)^{5/6} \sqrt [6]{1+i x}+\frac {1}{2} (1-i x)^{5/6} (1+i x)^{7/6}+\frac {1}{9} \text {Subst}\left (\int \frac {1}{1+x^2} \, dx,x,\frac {\sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )+\frac {1}{9} \text {Subst}\left (\int \frac {-\frac {1}{2}+\frac {\sqrt {3} x}{2}}{1-\sqrt {3} x+x^2} \, dx,x,\frac {\sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )+\frac {1}{9} \text {Subst}\left (\int \frac {-\frac {1}{2}-\frac {\sqrt {3} x}{2}}{1+\sqrt {3} x+x^2} \, dx,x,\frac {\sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right ) \\ & = \frac {1}{6} (1-i x)^{5/6} \sqrt [6]{1+i x}+\frac {1}{2} (1-i x)^{5/6} (1+i x)^{7/6}+\frac {1}{9} \arctan \left (\frac {\sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )+\frac {1}{36} \text {Subst}\left (\int \frac {1}{1-\sqrt {3} x+x^2} \, dx,x,\frac {\sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )+\frac {1}{36} \text {Subst}\left (\int \frac {1}{1+\sqrt {3} x+x^2} \, dx,x,\frac {\sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )+\frac {\text {Subst}\left (\int \frac {-\sqrt {3}+2 x}{1-\sqrt {3} x+x^2} \, dx,x,\frac {\sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )}{12 \sqrt {3}}-\frac {\text {Subst}\left (\int \frac {\sqrt {3}+2 x}{1+\sqrt {3} x+x^2} \, dx,x,\frac {\sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )}{12 \sqrt {3}} \\ & = \frac {1}{6} (1-i x)^{5/6} \sqrt [6]{1+i x}+\frac {1}{2} (1-i x)^{5/6} (1+i x)^{7/6}+\frac {1}{9} \arctan \left (\frac {\sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )+\frac {\log \left (1+\frac {\sqrt [3]{1-i x}}{\sqrt [3]{1+i x}}-\frac {\sqrt {3} \sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )}{12 \sqrt {3}}-\frac {\log \left (1+\frac {\sqrt [3]{1-i x}}{\sqrt [3]{1+i x}}+\frac {\sqrt {3} \sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )}{12 \sqrt {3}}-\frac {1}{18} \text {Subst}\left (\int \frac {1}{-1-x^2} \, dx,x,-\sqrt {3}+\frac {2 \sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )-\frac {1}{18} \text {Subst}\left (\int \frac {1}{-1-x^2} \, dx,x,\sqrt {3}+\frac {2 \sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right ) \\ & = \frac {1}{6} (1-i x)^{5/6} \sqrt [6]{1+i x}+\frac {1}{2} (1-i x)^{5/6} (1+i x)^{7/6}-\frac {1}{18} \arctan \left (\sqrt {3}-\frac {2 \sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )+\frac {1}{18} \arctan \left (\sqrt {3}+\frac {2 \sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )+\frac {1}{9} \arctan \left (\frac {\sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )+\frac {\log \left (1+\frac {\sqrt [3]{1-i x}}{\sqrt [3]{1+i x}}-\frac {\sqrt {3} \sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )}{12 \sqrt {3}}-\frac {\log \left (1+\frac {\sqrt [3]{1-i x}}{\sqrt [3]{1+i x}}+\frac {\sqrt {3} \sqrt [6]{1-i x}}{\sqrt [6]{1+i x}}\right )}{12 \sqrt {3}} \\ \end{align*}
Result contains higher order function than in optimal. Order 5 vs. order 3 in optimal.
Time = 0.02 (sec) , antiderivative size = 57, normalized size of antiderivative = 0.21 \[ \int e^{\frac {1}{3} i \arctan (x)} x \, dx=\frac {1}{10} (1-i x)^{5/6} \left (5 (1+i x)^{7/6}+2 \sqrt [6]{2} \operatorname {Hypergeometric2F1}\left (-\frac {1}{6},\frac {5}{6},\frac {11}{6},\frac {1}{2}-\frac {i x}{2}\right )\right ) \]
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\[\int {\left (\frac {i x +1}{\sqrt {x^{2}+1}}\right )}^{\frac {1}{3}} x d x\]
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none
Time = 0.29 (sec) , antiderivative size = 195, normalized size of antiderivative = 0.70 \[ \int e^{\frac {1}{3} i \arctan (x)} x \, dx=-\frac {1}{36} \, {\left (\sqrt {3} + i\right )} \log \left (\frac {1}{2} \, \sqrt {3} + \left (\frac {i \, \sqrt {x^{2} + 1}}{x + i}\right )^{\frac {1}{3}} + \frac {1}{2} i\right ) - \frac {1}{36} \, {\left (\sqrt {3} - i\right )} \log \left (\frac {1}{2} \, \sqrt {3} + \left (\frac {i \, \sqrt {x^{2} + 1}}{x + i}\right )^{\frac {1}{3}} - \frac {1}{2} i\right ) + \frac {1}{36} \, {\left (\sqrt {3} - i\right )} \log \left (-\frac {1}{2} \, \sqrt {3} + \left (\frac {i \, \sqrt {x^{2} + 1}}{x + i}\right )^{\frac {1}{3}} + \frac {1}{2} i\right ) + \frac {1}{36} \, {\left (\sqrt {3} + i\right )} \log \left (-\frac {1}{2} \, \sqrt {3} + \left (\frac {i \, \sqrt {x^{2} + 1}}{x + i}\right )^{\frac {1}{3}} - \frac {1}{2} i\right ) + \frac {1}{6} \, {\left (3 \, x^{2} - i \, x + 4\right )} \left (\frac {i \, \sqrt {x^{2} + 1}}{x + i}\right )^{\frac {1}{3}} - \frac {1}{18} i \, \log \left (\left (\frac {i \, \sqrt {x^{2} + 1}}{x + i}\right )^{\frac {1}{3}} + i\right ) + \frac {1}{18} i \, \log \left (\left (\frac {i \, \sqrt {x^{2} + 1}}{x + i}\right )^{\frac {1}{3}} - i\right ) \]
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\[ \int e^{\frac {1}{3} i \arctan (x)} x \, dx=\int x \sqrt [3]{\frac {i \left (x - i\right )}{\sqrt {x^{2} + 1}}}\, dx \]
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\[ \int e^{\frac {1}{3} i \arctan (x)} x \, dx=\int { x \left (\frac {i \, x + 1}{\sqrt {x^{2} + 1}}\right )^{\frac {1}{3}} \,d x } \]
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\[ \int e^{\frac {1}{3} i \arctan (x)} x \, dx=\int { x \left (\frac {i \, x + 1}{\sqrt {x^{2} + 1}}\right )^{\frac {1}{3}} \,d x } \]
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Timed out. \[ \int e^{\frac {1}{3} i \arctan (x)} x \, dx=\int x\,{\left (\frac {1+x\,1{}\mathrm {i}}{\sqrt {x^2+1}}\right )}^{1/3} \,d x \]
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