Integrand size = 23, antiderivative size = 159 \[ \int \frac {(d+i c d x) (a+b \arctan (c x))^2}{x^3} \, dx=-\frac {b c d (a+b \arctan (c x))}{x}+\frac {1}{2} c^2 d (a+b \arctan (c x))^2-\frac {d (a+b \arctan (c x))^2}{2 x^2}-\frac {i c d (a+b \arctan (c x))^2}{x}+b^2 c^2 d \log (x)-\frac {1}{2} b^2 c^2 d \log \left (1+c^2 x^2\right )+2 i b c^2 d (a+b \arctan (c x)) \log \left (2-\frac {2}{1-i c x}\right )+b^2 c^2 d \operatorname {PolyLog}\left (2,-1+\frac {2}{1-i c x}\right ) \]
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Time = 0.24 (sec) , antiderivative size = 159, normalized size of antiderivative = 1.00, number of steps used = 14, number of rules used = 11, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.478, Rules used = {4996, 4946, 5038, 272, 36, 29, 31, 5004, 5044, 4988, 2497} \[ \int \frac {(d+i c d x) (a+b \arctan (c x))^2}{x^3} \, dx=\frac {1}{2} c^2 d (a+b \arctan (c x))^2+2 i b c^2 d \log \left (2-\frac {2}{1-i c x}\right ) (a+b \arctan (c x))-\frac {d (a+b \arctan (c x))^2}{2 x^2}-\frac {i c d (a+b \arctan (c x))^2}{x}-\frac {b c d (a+b \arctan (c x))}{x}+b^2 c^2 d \operatorname {PolyLog}\left (2,\frac {2}{1-i c x}-1\right )-\frac {1}{2} b^2 c^2 d \log \left (c^2 x^2+1\right )+b^2 c^2 d \log (x) \]
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Rule 29
Rule 31
Rule 36
Rule 272
Rule 2497
Rule 4946
Rule 4988
Rule 4996
Rule 5004
Rule 5038
Rule 5044
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {d (a+b \arctan (c x))^2}{x^3}+\frac {i c d (a+b \arctan (c x))^2}{x^2}\right ) \, dx \\ & = d \int \frac {(a+b \arctan (c x))^2}{x^3} \, dx+(i c d) \int \frac {(a+b \arctan (c x))^2}{x^2} \, dx \\ & = -\frac {d (a+b \arctan (c x))^2}{2 x^2}-\frac {i c d (a+b \arctan (c x))^2}{x}+(b c d) \int \frac {a+b \arctan (c x)}{x^2 \left (1+c^2 x^2\right )} \, dx+\left (2 i b c^2 d\right ) \int \frac {a+b \arctan (c x)}{x \left (1+c^2 x^2\right )} \, dx \\ & = c^2 d (a+b \arctan (c x))^2-\frac {d (a+b \arctan (c x))^2}{2 x^2}-\frac {i c d (a+b \arctan (c x))^2}{x}+(b c d) \int \frac {a+b \arctan (c x)}{x^2} \, dx-\left (2 b c^2 d\right ) \int \frac {a+b \arctan (c x)}{x (i+c x)} \, dx-\left (b c^3 d\right ) \int \frac {a+b \arctan (c x)}{1+c^2 x^2} \, dx \\ & = -\frac {b c d (a+b \arctan (c x))}{x}+\frac {1}{2} c^2 d (a+b \arctan (c x))^2-\frac {d (a+b \arctan (c x))^2}{2 x^2}-\frac {i c d (a+b \arctan (c x))^2}{x}+2 i b c^2 d (a+b \arctan (c x)) \log \left (2-\frac {2}{1-i c x}\right )+\left (b^2 c^2 d\right ) \int \frac {1}{x \left (1+c^2 x^2\right )} \, dx-\left (2 i b^2 c^3 d\right ) \int \frac {\log \left (2-\frac {2}{1-i c x}\right )}{1+c^2 x^2} \, dx \\ & = -\frac {b c d (a+b \arctan (c x))}{x}+\frac {1}{2} c^2 d (a+b \arctan (c x))^2-\frac {d (a+b \arctan (c x))^2}{2 x^2}-\frac {i c d (a+b \arctan (c x))^2}{x}+2 i b c^2 d (a+b \arctan (c x)) \log \left (2-\frac {2}{1-i c x}\right )+b^2 c^2 d \operatorname {PolyLog}\left (2,-1+\frac {2}{1-i c x}\right )+\frac {1}{2} \left (b^2 c^2 d\right ) \text {Subst}\left (\int \frac {1}{x \left (1+c^2 x\right )} \, dx,x,x^2\right ) \\ & = -\frac {b c d (a+b \arctan (c x))}{x}+\frac {1}{2} c^2 d (a+b \arctan (c x))^2-\frac {d (a+b \arctan (c x))^2}{2 x^2}-\frac {i c d (a+b \arctan (c x))^2}{x}+2 i b c^2 d (a+b \arctan (c x)) \log \left (2-\frac {2}{1-i c x}\right )+b^2 c^2 d \operatorname {PolyLog}\left (2,-1+\frac {2}{1-i c x}\right )+\frac {1}{2} \left (b^2 c^2 d\right ) \text {Subst}\left (\int \frac {1}{x} \, dx,x,x^2\right )-\frac {1}{2} \left (b^2 c^4 d\right ) \text {Subst}\left (\int \frac {1}{1+c^2 x} \, dx,x,x^2\right ) \\ & = -\frac {b c d (a+b \arctan (c x))}{x}+\frac {1}{2} c^2 d (a+b \arctan (c x))^2-\frac {d (a+b \arctan (c x))^2}{2 x^2}-\frac {i c d (a+b \arctan (c x))^2}{x}+b^2 c^2 d \log (x)-\frac {1}{2} b^2 c^2 d \log \left (1+c^2 x^2\right )+2 i b c^2 d (a+b \arctan (c x)) \log \left (2-\frac {2}{1-i c x}\right )+b^2 c^2 d \operatorname {PolyLog}\left (2,-1+\frac {2}{1-i c x}\right ) \\ \end{align*}
Time = 0.24 (sec) , antiderivative size = 190, normalized size of antiderivative = 1.19 \[ \int \frac {(d+i c d x) (a+b \arctan (c x))^2}{x^3} \, dx=-\frac {d \left (a^2+2 i a^2 c x+2 a b c x-b^2 (-i+c x)^2 \arctan (c x)^2+2 b \arctan (c x) \left (a+2 i a c x+b c x+a c^2 x^2-2 i b c^2 x^2 \log \left (1-e^{2 i \arctan (c x)}\right )\right )-4 i a b c^2 x^2 \log (c x)-2 b^2 c^2 x^2 \log \left (\frac {c x}{\sqrt {1+c^2 x^2}}\right )+2 i a b c^2 x^2 \log \left (1+c^2 x^2\right )-2 b^2 c^2 x^2 \operatorname {PolyLog}\left (2,e^{2 i \arctan (c x)}\right )\right )}{2 x^2} \]
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Both result and optimal contain complex but leaf count of result is larger than twice the leaf count of optimal. 356 vs. \(2 (149 ) = 298\).
Time = 2.46 (sec) , antiderivative size = 357, normalized size of antiderivative = 2.25
method | result | size |
parts | \(a^{2} d \left (-\frac {1}{2 x^{2}}-\frac {i c}{x}\right )+d \,b^{2} c^{2} \left (-i \arctan \left (c x \right ) \ln \left (c^{2} x^{2}+1\right )-\frac {\arctan \left (c x \right )^{2}}{2 c^{2} x^{2}}+2 i \arctan \left (c x \right ) \ln \left (c x \right )-\frac {\arctan \left (c x \right )}{c x}-\frac {i \arctan \left (c x \right )^{2}}{c x}-\frac {\arctan \left (c x \right )^{2}}{2}+\ln \left (c x \right )-\frac {\ln \left (c^{2} x^{2}+1\right )}{2}-\ln \left (c x \right ) \ln \left (i c x +1\right )+\ln \left (c x \right ) \ln \left (-i c x +1\right )-\operatorname {dilog}\left (i c x +1\right )+\operatorname {dilog}\left (-i c x +1\right )+\frac {\ln \left (c x -i\right ) \ln \left (c^{2} x^{2}+1\right )}{2}-\frac {\operatorname {dilog}\left (-\frac {i \left (c x +i\right )}{2}\right )}{2}-\frac {\ln \left (c x -i\right ) \ln \left (-\frac {i \left (c x +i\right )}{2}\right )}{2}-\frac {\ln \left (c x -i\right )^{2}}{4}-\frac {\ln \left (c x +i\right ) \ln \left (c^{2} x^{2}+1\right )}{2}+\frac {\operatorname {dilog}\left (\frac {i \left (c x -i\right )}{2}\right )}{2}+\frac {\ln \left (c x +i\right ) \ln \left (\frac {i \left (c x -i\right )}{2}\right )}{2}+\frac {\ln \left (c x +i\right )^{2}}{4}\right )+2 a b d \,c^{2} \left (-\frac {i \arctan \left (c x \right )}{c x}-\frac {\arctan \left (c x \right )}{2 c^{2} x^{2}}+i \ln \left (c x \right )-\frac {1}{2 c x}-\frac {i \ln \left (c^{2} x^{2}+1\right )}{2}-\frac {\arctan \left (c x \right )}{2}\right )\) | \(357\) |
derivativedivides | \(c^{2} \left (a^{2} d \left (-\frac {i}{c x}-\frac {1}{2 c^{2} x^{2}}\right )+d \,b^{2} \left (-i \arctan \left (c x \right ) \ln \left (c^{2} x^{2}+1\right )-\frac {\arctan \left (c x \right )^{2}}{2 c^{2} x^{2}}+2 i \arctan \left (c x \right ) \ln \left (c x \right )-\frac {\arctan \left (c x \right )}{c x}-\frac {i \arctan \left (c x \right )^{2}}{c x}-\frac {\arctan \left (c x \right )^{2}}{2}+\ln \left (c x \right )-\frac {\ln \left (c^{2} x^{2}+1\right )}{2}-\ln \left (c x \right ) \ln \left (i c x +1\right )+\ln \left (c x \right ) \ln \left (-i c x +1\right )-\operatorname {dilog}\left (i c x +1\right )+\operatorname {dilog}\left (-i c x +1\right )+\frac {\ln \left (c x -i\right ) \ln \left (c^{2} x^{2}+1\right )}{2}-\frac {\operatorname {dilog}\left (-\frac {i \left (c x +i\right )}{2}\right )}{2}-\frac {\ln \left (c x -i\right ) \ln \left (-\frac {i \left (c x +i\right )}{2}\right )}{2}-\frac {\ln \left (c x -i\right )^{2}}{4}-\frac {\ln \left (c x +i\right ) \ln \left (c^{2} x^{2}+1\right )}{2}+\frac {\operatorname {dilog}\left (\frac {i \left (c x -i\right )}{2}\right )}{2}+\frac {\ln \left (c x +i\right ) \ln \left (\frac {i \left (c x -i\right )}{2}\right )}{2}+\frac {\ln \left (c x +i\right )^{2}}{4}\right )+2 a b d \left (-\frac {i \arctan \left (c x \right )}{c x}-\frac {\arctan \left (c x \right )}{2 c^{2} x^{2}}+i \ln \left (c x \right )-\frac {1}{2 c x}-\frac {i \ln \left (c^{2} x^{2}+1\right )}{2}-\frac {\arctan \left (c x \right )}{2}\right )\right )\) | \(360\) |
default | \(c^{2} \left (a^{2} d \left (-\frac {i}{c x}-\frac {1}{2 c^{2} x^{2}}\right )+d \,b^{2} \left (-i \arctan \left (c x \right ) \ln \left (c^{2} x^{2}+1\right )-\frac {\arctan \left (c x \right )^{2}}{2 c^{2} x^{2}}+2 i \arctan \left (c x \right ) \ln \left (c x \right )-\frac {\arctan \left (c x \right )}{c x}-\frac {i \arctan \left (c x \right )^{2}}{c x}-\frac {\arctan \left (c x \right )^{2}}{2}+\ln \left (c x \right )-\frac {\ln \left (c^{2} x^{2}+1\right )}{2}-\ln \left (c x \right ) \ln \left (i c x +1\right )+\ln \left (c x \right ) \ln \left (-i c x +1\right )-\operatorname {dilog}\left (i c x +1\right )+\operatorname {dilog}\left (-i c x +1\right )+\frac {\ln \left (c x -i\right ) \ln \left (c^{2} x^{2}+1\right )}{2}-\frac {\operatorname {dilog}\left (-\frac {i \left (c x +i\right )}{2}\right )}{2}-\frac {\ln \left (c x -i\right ) \ln \left (-\frac {i \left (c x +i\right )}{2}\right )}{2}-\frac {\ln \left (c x -i\right )^{2}}{4}-\frac {\ln \left (c x +i\right ) \ln \left (c^{2} x^{2}+1\right )}{2}+\frac {\operatorname {dilog}\left (\frac {i \left (c x -i\right )}{2}\right )}{2}+\frac {\ln \left (c x +i\right ) \ln \left (\frac {i \left (c x -i\right )}{2}\right )}{2}+\frac {\ln \left (c x +i\right )^{2}}{4}\right )+2 a b d \left (-\frac {i \arctan \left (c x \right )}{c x}-\frac {\arctan \left (c x \right )}{2 c^{2} x^{2}}+i \ln \left (c x \right )-\frac {1}{2 c x}-\frac {i \ln \left (c^{2} x^{2}+1\right )}{2}-\frac {\arctan \left (c x \right )}{2}\right )\right )\) | \(360\) |
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\[ \int \frac {(d+i c d x) (a+b \arctan (c x))^2}{x^3} \, dx=\int { \frac {{\left (i \, c d x + d\right )} {\left (b \arctan \left (c x\right ) + a\right )}^{2}}{x^{3}} \,d x } \]
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Timed out. \[ \int \frac {(d+i c d x) (a+b \arctan (c x))^2}{x^3} \, dx=\text {Timed out} \]
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\[ \int \frac {(d+i c d x) (a+b \arctan (c x))^2}{x^3} \, dx=\int { \frac {{\left (i \, c d x + d\right )} {\left (b \arctan \left (c x\right ) + a\right )}^{2}}{x^{3}} \,d x } \]
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Timed out. \[ \int \frac {(d+i c d x) (a+b \arctan (c x))^2}{x^3} \, dx=\text {Timed out} \]
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Timed out. \[ \int \frac {(d+i c d x) (a+b \arctan (c x))^2}{x^3} \, dx=\int \frac {{\left (a+b\,\mathrm {atan}\left (c\,x\right )\right )}^2\,\left (d+c\,d\,x\,1{}\mathrm {i}\right )}{x^3} \,d x \]
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