Integrand size = 16, antiderivative size = 328 \[ \int \frac {e^{\frac {1}{4} i \arctan (a x)}}{x^2} \, dx=-\frac {(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{x}-\frac {1}{2} i a \arctan \left (\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )+\frac {i a \arctan \left (1-\frac {\sqrt {2} \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )}{2 \sqrt {2}}-\frac {i a \arctan \left (1+\frac {\sqrt {2} \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )}{2 \sqrt {2}}-\frac {1}{2} i a \text {arctanh}\left (\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )+\frac {i a \log \left (1-\frac {\sqrt {2} \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}+\frac {\sqrt [4]{1+i a x}}{\sqrt [4]{1-i a x}}\right )}{4 \sqrt {2}}-\frac {i a \log \left (1+\frac {\sqrt {2} \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}+\frac {\sqrt [4]{1+i a x}}{\sqrt [4]{1-i a x}}\right )}{4 \sqrt {2}} \]
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Time = 0.09 (sec) , antiderivative size = 328, normalized size of antiderivative = 1.00, number of steps used = 16, number of rules used = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.812, Rules used = {5170, 96, 95, 220, 218, 212, 209, 217, 1179, 642, 1176, 631, 210} \[ \int \frac {e^{\frac {1}{4} i \arctan (a x)}}{x^2} \, dx=-\frac {1}{2} i a \arctan \left (\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )+\frac {i a \arctan \left (1-\frac {\sqrt {2} \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )}{2 \sqrt {2}}-\frac {i a \arctan \left (1+\frac {\sqrt {2} \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )}{2 \sqrt {2}}-\frac {1}{2} i a \text {arctanh}\left (\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )-\frac {(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{x}+\frac {i a \log \left (\frac {\sqrt [4]{1+i a x}}{\sqrt [4]{1-i a x}}-\frac {\sqrt {2} \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}+1\right )}{4 \sqrt {2}}-\frac {i a \log \left (\frac {\sqrt [4]{1+i a x}}{\sqrt [4]{1-i a x}}+\frac {\sqrt {2} \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}+1\right )}{4 \sqrt {2}} \]
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Rule 95
Rule 96
Rule 209
Rule 210
Rule 212
Rule 217
Rule 218
Rule 220
Rule 631
Rule 642
Rule 1176
Rule 1179
Rule 5170
Rubi steps \begin{align*} \text {integral}& = \int \frac {\sqrt [8]{1+i a x}}{x^2 \sqrt [8]{1-i a x}} \, dx \\ & = -\frac {(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{x}+\frac {1}{4} (i a) \int \frac {1}{x \sqrt [8]{1-i a x} (1+i a x)^{7/8}} \, dx \\ & = -\frac {(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{x}+(2 i a) \text {Subst}\left (\int \frac {1}{-1+x^8} \, dx,x,\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right ) \\ & = -\frac {(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{x}-(i a) \text {Subst}\left (\int \frac {1}{1-x^4} \, dx,x,\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )-(i a) \text {Subst}\left (\int \frac {1}{1+x^4} \, dx,x,\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right ) \\ & = -\frac {(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{x}-\frac {1}{2} (i a) \text {Subst}\left (\int \frac {1}{1-x^2} \, dx,x,\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )-\frac {1}{2} (i a) \text {Subst}\left (\int \frac {1}{1+x^2} \, dx,x,\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )-\frac {1}{2} (i a) \text {Subst}\left (\int \frac {1-x^2}{1+x^4} \, dx,x,\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )-\frac {1}{2} (i a) \text {Subst}\left (\int \frac {1+x^2}{1+x^4} \, dx,x,\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right ) \\ & = -\frac {(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{x}-\frac {1}{2} i a \arctan \left (\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )-\frac {1}{2} i a \text {arctanh}\left (\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )-\frac {1}{4} (i a) \text {Subst}\left (\int \frac {1}{1-\sqrt {2} x+x^2} \, dx,x,\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )-\frac {1}{4} (i a) \text {Subst}\left (\int \frac {1}{1+\sqrt {2} x+x^2} \, dx,x,\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )+\frac {(i a) \text {Subst}\left (\int \frac {\sqrt {2}+2 x}{-1-\sqrt {2} x-x^2} \, dx,x,\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )}{4 \sqrt {2}}+\frac {(i a) \text {Subst}\left (\int \frac {\sqrt {2}-2 x}{-1+\sqrt {2} x-x^2} \, dx,x,\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )}{4 \sqrt {2}} \\ & = -\frac {(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{x}-\frac {1}{2} i a \arctan \left (\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )-\frac {1}{2} i a \text {arctanh}\left (\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )+\frac {i a \log \left (1-\frac {\sqrt {2} \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}+\frac {\sqrt [4]{1+i a x}}{\sqrt [4]{1-i a x}}\right )}{4 \sqrt {2}}-\frac {i a \log \left (1+\frac {\sqrt {2} \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}+\frac {\sqrt [4]{1+i a x}}{\sqrt [4]{1-i a x}}\right )}{4 \sqrt {2}}-\frac {(i a) \text {Subst}\left (\int \frac {1}{-1-x^2} \, dx,x,1-\frac {\sqrt {2} \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )}{2 \sqrt {2}}+\frac {(i a) \text {Subst}\left (\int \frac {1}{-1-x^2} \, dx,x,1+\frac {\sqrt {2} \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )}{2 \sqrt {2}} \\ & = -\frac {(1-i a x)^{7/8} \sqrt [8]{1+i a x}}{x}-\frac {1}{2} i a \arctan \left (\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )+\frac {i a \arctan \left (1-\frac {\sqrt {2} \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )}{2 \sqrt {2}}-\frac {i a \arctan \left (1+\frac {\sqrt {2} \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )}{2 \sqrt {2}}-\frac {1}{2} i a \text {arctanh}\left (\frac {\sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}\right )+\frac {i a \log \left (1-\frac {\sqrt {2} \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}+\frac {\sqrt [4]{1+i a x}}{\sqrt [4]{1-i a x}}\right )}{4 \sqrt {2}}-\frac {i a \log \left (1+\frac {\sqrt {2} \sqrt [8]{1+i a x}}{\sqrt [8]{1-i a x}}+\frac {\sqrt [4]{1+i a x}}{\sqrt [4]{1-i a x}}\right )}{4 \sqrt {2}} \\ \end{align*}
Result contains higher order function than in optimal. Order 5 vs. order 3 in optimal.
Time = 0.02 (sec) , antiderivative size = 71, normalized size of antiderivative = 0.22 \[ \int \frac {e^{\frac {1}{4} i \arctan (a x)}}{x^2} \, dx=-\frac {i (1-i a x)^{7/8} \left (-7 i+7 a x+2 a x \operatorname {Hypergeometric2F1}\left (\frac {7}{8},1,\frac {15}{8},\frac {i+a x}{i-a x}\right )\right )}{7 x (1+i a x)^{7/8}} \]
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\[\int \frac {{\left (\frac {i a x +1}{\sqrt {a^{2} x^{2}+1}}\right )}^{\frac {1}{4}}}{x^{2}}d x\]
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none
Time = 0.28 (sec) , antiderivative size = 345, normalized size of antiderivative = 1.05 \[ \int \frac {e^{\frac {1}{4} i \arctan (a x)}}{x^2} \, dx=\frac {-i \, a x \log \left (\left (\frac {i \, \sqrt {a^{2} x^{2} + 1}}{a x + i}\right )^{\frac {1}{4}} + 1\right ) + a x \log \left (\left (\frac {i \, \sqrt {a^{2} x^{2} + 1}}{a x + i}\right )^{\frac {1}{4}} + i\right ) - a x \log \left (\left (\frac {i \, \sqrt {a^{2} x^{2} + 1}}{a x + i}\right )^{\frac {1}{4}} - i\right ) + i \, a x \log \left (\left (\frac {i \, \sqrt {a^{2} x^{2} + 1}}{a x + i}\right )^{\frac {1}{4}} - 1\right ) + \sqrt {i \, a^{2}} x \log \left (\frac {a \left (\frac {i \, \sqrt {a^{2} x^{2} + 1}}{a x + i}\right )^{\frac {1}{4}} + i \, \sqrt {i \, a^{2}}}{a}\right ) - \sqrt {i \, a^{2}} x \log \left (\frac {a \left (\frac {i \, \sqrt {a^{2} x^{2} + 1}}{a x + i}\right )^{\frac {1}{4}} - i \, \sqrt {i \, a^{2}}}{a}\right ) + \sqrt {-i \, a^{2}} x \log \left (\frac {a \left (\frac {i \, \sqrt {a^{2} x^{2} + 1}}{a x + i}\right )^{\frac {1}{4}} + i \, \sqrt {-i \, a^{2}}}{a}\right ) - \sqrt {-i \, a^{2}} x \log \left (\frac {a \left (\frac {i \, \sqrt {a^{2} x^{2} + 1}}{a x + i}\right )^{\frac {1}{4}} - i \, \sqrt {-i \, a^{2}}}{a}\right ) - 4 \, {\left (-i \, a x + 1\right )} \left (\frac {i \, \sqrt {a^{2} x^{2} + 1}}{a x + i}\right )^{\frac {1}{4}}}{4 \, x} \]
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\[ \int \frac {e^{\frac {1}{4} i \arctan (a x)}}{x^2} \, dx=\int \frac {\sqrt [4]{\frac {i \left (a x - i\right )}{\sqrt {a^{2} x^{2} + 1}}}}{x^{2}}\, dx \]
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\[ \int \frac {e^{\frac {1}{4} i \arctan (a x)}}{x^2} \, dx=\int { \frac {\left (\frac {i \, a x + 1}{\sqrt {a^{2} x^{2} + 1}}\right )^{\frac {1}{4}}}{x^{2}} \,d x } \]
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Exception generated. \[ \int \frac {e^{\frac {1}{4} i \arctan (a x)}}{x^2} \, dx=\text {Exception raised: TypeError} \]
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Timed out. \[ \int \frac {e^{\frac {1}{4} i \arctan (a x)}}{x^2} \, dx=\int \frac {{\left (\frac {1+a\,x\,1{}\mathrm {i}}{\sqrt {a^2\,x^2+1}}\right )}^{1/4}}{x^2} \,d x \]
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