Integrand size = 26, antiderivative size = 281 \[ \int \frac {e^{n \arctan (a x)}}{x^3 \sqrt {c+a^2 c x^2}} \, dx=-\frac {(1-i a x)^{\frac {1}{2} (1+i n)} (1+i a x)^{\frac {1}{2} (1-i n)} \sqrt {1+a^2 x^2}}{2 x^2 \sqrt {c+a^2 c x^2}}-\frac {a n (1-i a x)^{\frac {1}{2} (1+i n)} (1+i a x)^{\frac {1}{2} (1-i n)} \sqrt {1+a^2 x^2}}{2 x \sqrt {c+a^2 c x^2}}+\frac {a^2 \left (1-n^2\right ) (1-i a x)^{\frac {1}{2} (1+i n)} (1+i a x)^{\frac {1}{2} (-1-i n)} \sqrt {1+a^2 x^2} \operatorname {Hypergeometric2F1}\left (1,\frac {1}{2} (1+i n),\frac {1}{2} (3+i n),\frac {1-i a x}{1+i a x}\right )}{(1+i n) \sqrt {c+a^2 c x^2}} \]
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Time = 0.18 (sec) , antiderivative size = 281, normalized size of antiderivative = 1.00, number of steps used = 6, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.231, Rules used = {5193, 5190, 105, 156, 12, 133} \[ \int \frac {e^{n \arctan (a x)}}{x^3 \sqrt {c+a^2 c x^2}} \, dx=\frac {a^2 \left (1-n^2\right ) \sqrt {a^2 x^2+1} (1-i a x)^{\frac {1}{2} (1+i n)} (1+i a x)^{\frac {1}{2} (-1-i n)} \operatorname {Hypergeometric2F1}\left (1,\frac {1}{2} (i n+1),\frac {1}{2} (i n+3),\frac {1-i a x}{i a x+1}\right )}{(1+i n) \sqrt {a^2 c x^2+c}}-\frac {a n \sqrt {a^2 x^2+1} (1-i a x)^{\frac {1}{2} (1+i n)} (1+i a x)^{\frac {1}{2} (1-i n)}}{2 x \sqrt {a^2 c x^2+c}}-\frac {\sqrt {a^2 x^2+1} (1-i a x)^{\frac {1}{2} (1+i n)} (1+i a x)^{\frac {1}{2} (1-i n)}}{2 x^2 \sqrt {a^2 c x^2+c}} \]
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Rule 12
Rule 105
Rule 133
Rule 156
Rule 5190
Rule 5193
Rubi steps \begin{align*} \text {integral}& = \frac {\sqrt {1+a^2 x^2} \int \frac {e^{n \arctan (a x)}}{x^3 \sqrt {1+a^2 x^2}} \, dx}{\sqrt {c+a^2 c x^2}} \\ & = \frac {\sqrt {1+a^2 x^2} \int \frac {(1-i a x)^{-\frac {1}{2}+\frac {i n}{2}} (1+i a x)^{-\frac {1}{2}-\frac {i n}{2}}}{x^3} \, dx}{\sqrt {c+a^2 c x^2}} \\ & = -\frac {(1-i a x)^{\frac {1}{2} (1+i n)} (1+i a x)^{\frac {1}{2} (1-i n)} \sqrt {1+a^2 x^2}}{2 x^2 \sqrt {c+a^2 c x^2}}-\frac {\sqrt {1+a^2 x^2} \int \frac {(1-i a x)^{-\frac {1}{2}+\frac {i n}{2}} (1+i a x)^{-\frac {1}{2}-\frac {i n}{2}} \left (-a n+a^2 x\right )}{x^2} \, dx}{2 \sqrt {c+a^2 c x^2}} \\ & = -\frac {(1-i a x)^{\frac {1}{2} (1+i n)} (1+i a x)^{\frac {1}{2} (1-i n)} \sqrt {1+a^2 x^2}}{2 x^2 \sqrt {c+a^2 c x^2}}-\frac {a n (1-i a x)^{\frac {1}{2} (1+i n)} (1+i a x)^{\frac {1}{2} (1-i n)} \sqrt {1+a^2 x^2}}{2 x \sqrt {c+a^2 c x^2}}-\frac {\sqrt {1+a^2 x^2} \int \frac {a^2 \left (1-n^2\right ) (1-i a x)^{-\frac {1}{2}+\frac {i n}{2}} (1+i a x)^{-\frac {1}{2}-\frac {i n}{2}}}{x} \, dx}{2 \sqrt {c+a^2 c x^2}} \\ & = -\frac {(1-i a x)^{\frac {1}{2} (1+i n)} (1+i a x)^{\frac {1}{2} (1-i n)} \sqrt {1+a^2 x^2}}{2 x^2 \sqrt {c+a^2 c x^2}}-\frac {a n (1-i a x)^{\frac {1}{2} (1+i n)} (1+i a x)^{\frac {1}{2} (1-i n)} \sqrt {1+a^2 x^2}}{2 x \sqrt {c+a^2 c x^2}}-\frac {\left (a^2 \left (1-n^2\right ) \sqrt {1+a^2 x^2}\right ) \int \frac {(1-i a x)^{-\frac {1}{2}+\frac {i n}{2}} (1+i a x)^{-\frac {1}{2}-\frac {i n}{2}}}{x} \, dx}{2 \sqrt {c+a^2 c x^2}} \\ & = -\frac {(1-i a x)^{\frac {1}{2} (1+i n)} (1+i a x)^{\frac {1}{2} (1-i n)} \sqrt {1+a^2 x^2}}{2 x^2 \sqrt {c+a^2 c x^2}}-\frac {a n (1-i a x)^{\frac {1}{2} (1+i n)} (1+i a x)^{\frac {1}{2} (1-i n)} \sqrt {1+a^2 x^2}}{2 x \sqrt {c+a^2 c x^2}}+\frac {a^2 \left (1-n^2\right ) (1-i a x)^{\frac {1}{2} (1+i n)} (1+i a x)^{\frac {1}{2} (-1-i n)} \sqrt {1+a^2 x^2} \operatorname {Hypergeometric2F1}\left (1,\frac {1}{2} (1+i n),\frac {1}{2} (3+i n),\frac {1-i a x}{1+i a x}\right )}{(1+i n) \sqrt {c+a^2 c x^2}} \\ \end{align*}
Time = 0.06 (sec) , antiderivative size = 159, normalized size of antiderivative = 0.57 \[ \int \frac {e^{n \arctan (a x)}}{x^3 \sqrt {c+a^2 c x^2}} \, dx=\frac {i (1-i a x)^{\frac {1}{2}+\frac {i n}{2}} (1+i a x)^{-\frac {1}{2}-\frac {i n}{2}} \sqrt {1+a^2 x^2} \left (-((-i+n) (-i+a x) (1+a n x))+2 a^2 \left (-1+n^2\right ) x^2 \operatorname {Hypergeometric2F1}\left (1,\frac {1}{2}+\frac {i n}{2},\frac {3}{2}+\frac {i n}{2},\frac {i+a x}{i-a x}\right )\right )}{2 (-i+n) x^2 \sqrt {c+a^2 c x^2}} \]
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\[\int \frac {{\mathrm e}^{n \arctan \left (a x \right )}}{x^{3} \sqrt {a^{2} c \,x^{2}+c}}d x\]
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\[ \int \frac {e^{n \arctan (a x)}}{x^3 \sqrt {c+a^2 c x^2}} \, dx=\int { \frac {e^{\left (n \arctan \left (a x\right )\right )}}{\sqrt {a^{2} c x^{2} + c} x^{3}} \,d x } \]
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\[ \int \frac {e^{n \arctan (a x)}}{x^3 \sqrt {c+a^2 c x^2}} \, dx=\int \frac {e^{n \operatorname {atan}{\left (a x \right )}}}{x^{3} \sqrt {c \left (a^{2} x^{2} + 1\right )}}\, dx \]
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\[ \int \frac {e^{n \arctan (a x)}}{x^3 \sqrt {c+a^2 c x^2}} \, dx=\int { \frac {e^{\left (n \arctan \left (a x\right )\right )}}{\sqrt {a^{2} c x^{2} + c} x^{3}} \,d x } \]
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\[ \int \frac {e^{n \arctan (a x)}}{x^3 \sqrt {c+a^2 c x^2}} \, dx=\int { \frac {e^{\left (n \arctan \left (a x\right )\right )}}{\sqrt {a^{2} c x^{2} + c} x^{3}} \,d x } \]
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Timed out. \[ \int \frac {e^{n \arctan (a x)}}{x^3 \sqrt {c+a^2 c x^2}} \, dx=\int \frac {{\mathrm {e}}^{n\,\mathrm {atan}\left (a\,x\right )}}{x^3\,\sqrt {c\,a^2\,x^2+c}} \,d x \]
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