Integrand size = 18, antiderivative size = 69 \[ \int x^3 \left (c+a^2 c x^2\right ) \arctan (a x) \, dx=\frac {c x}{12 a^3}-\frac {c x^3}{36 a}-\frac {1}{30} a c x^5-\frac {c \arctan (a x)}{12 a^4}+\frac {1}{4} c x^4 \arctan (a x)+\frac {1}{6} a^2 c x^6 \arctan (a x) \]
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Time = 0.06 (sec) , antiderivative size = 69, normalized size of antiderivative = 1.00, number of steps used = 9, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.222, Rules used = {5070, 4946, 308, 209} \[ \int x^3 \left (c+a^2 c x^2\right ) \arctan (a x) \, dx=-\frac {c \arctan (a x)}{12 a^4}+\frac {c x}{12 a^3}+\frac {1}{6} a^2 c x^6 \arctan (a x)+\frac {1}{4} c x^4 \arctan (a x)-\frac {1}{30} a c x^5-\frac {c x^3}{36 a} \]
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Rule 209
Rule 308
Rule 4946
Rule 5070
Rubi steps \begin{align*} \text {integral}& = c \int x^3 \arctan (a x) \, dx+\left (a^2 c\right ) \int x^5 \arctan (a x) \, dx \\ & = \frac {1}{4} c x^4 \arctan (a x)+\frac {1}{6} a^2 c x^6 \arctan (a x)-\frac {1}{4} (a c) \int \frac {x^4}{1+a^2 x^2} \, dx-\frac {1}{6} \left (a^3 c\right ) \int \frac {x^6}{1+a^2 x^2} \, dx \\ & = \frac {1}{4} c x^4 \arctan (a x)+\frac {1}{6} a^2 c x^6 \arctan (a x)-\frac {1}{4} (a c) \int \left (-\frac {1}{a^4}+\frac {x^2}{a^2}+\frac {1}{a^4 \left (1+a^2 x^2\right )}\right ) \, dx-\frac {1}{6} \left (a^3 c\right ) \int \left (\frac {1}{a^6}-\frac {x^2}{a^4}+\frac {x^4}{a^2}-\frac {1}{a^6 \left (1+a^2 x^2\right )}\right ) \, dx \\ & = \frac {c x}{12 a^3}-\frac {c x^3}{36 a}-\frac {1}{30} a c x^5+\frac {1}{4} c x^4 \arctan (a x)+\frac {1}{6} a^2 c x^6 \arctan (a x)+\frac {c \int \frac {1}{1+a^2 x^2} \, dx}{6 a^3}-\frac {c \int \frac {1}{1+a^2 x^2} \, dx}{4 a^3} \\ & = \frac {c x}{12 a^3}-\frac {c x^3}{36 a}-\frac {1}{30} a c x^5-\frac {c \arctan (a x)}{12 a^4}+\frac {1}{4} c x^4 \arctan (a x)+\frac {1}{6} a^2 c x^6 \arctan (a x) \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 69, normalized size of antiderivative = 1.00 \[ \int x^3 \left (c+a^2 c x^2\right ) \arctan (a x) \, dx=\frac {c x}{12 a^3}-\frac {c x^3}{36 a}-\frac {1}{30} a c x^5-\frac {c \arctan (a x)}{12 a^4}+\frac {1}{4} c x^4 \arctan (a x)+\frac {1}{6} a^2 c x^6 \arctan (a x) \]
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Time = 0.23 (sec) , antiderivative size = 60, normalized size of antiderivative = 0.87
method | result | size |
derivativedivides | \(\frac {\frac {c \arctan \left (a x \right ) a^{6} x^{6}}{6}+\frac {c \arctan \left (a x \right ) a^{4} x^{4}}{4}-\frac {c \left (\frac {2 a^{5} x^{5}}{5}+\frac {a^{3} x^{3}}{3}-a x +\arctan \left (a x \right )\right )}{12}}{a^{4}}\) | \(60\) |
default | \(\frac {\frac {c \arctan \left (a x \right ) a^{6} x^{6}}{6}+\frac {c \arctan \left (a x \right ) a^{4} x^{4}}{4}-\frac {c \left (\frac {2 a^{5} x^{5}}{5}+\frac {a^{3} x^{3}}{3}-a x +\arctan \left (a x \right )\right )}{12}}{a^{4}}\) | \(60\) |
parts | \(\frac {a^{2} c \,x^{6} \arctan \left (a x \right )}{6}+\frac {c \,x^{4} \arctan \left (a x \right )}{4}-\frac {c a \left (\frac {\frac {2}{5} a^{4} x^{5}+\frac {1}{3} a^{2} x^{3}-x}{a^{4}}+\frac {\arctan \left (a x \right )}{a^{5}}\right )}{12}\) | \(62\) |
parallelrisch | \(\frac {30 c \arctan \left (a x \right ) a^{6} x^{6}-6 a^{5} c \,x^{5}+45 c \arctan \left (a x \right ) a^{4} x^{4}-5 a^{3} c \,x^{3}+15 a c x -15 c \arctan \left (a x \right )}{180 a^{4}}\) | \(63\) |
risch | \(-\frac {i c \,x^{4} \left (2 a^{2} x^{2}+3\right ) \ln \left (i a x +1\right )}{24}+\frac {i c \,a^{2} x^{6} \ln \left (-i a x +1\right )}{12}-\frac {a c \,x^{5}}{30}+\frac {i c \,x^{4} \ln \left (-i a x +1\right )}{8}-\frac {c \,x^{3}}{36 a}+\frac {c x}{12 a^{3}}-\frac {c \arctan \left (a x \right )}{12 a^{4}}\) | \(93\) |
meijerg | \(\frac {c \left (-\frac {2 x a \left (21 a^{4} x^{4}-35 a^{2} x^{2}+105\right )}{315}+\frac {2 x a \left (7 a^{6} x^{6}+7\right ) \arctan \left (\sqrt {a^{2} x^{2}}\right )}{21 \sqrt {a^{2} x^{2}}}\right )}{4 a^{4}}+\frac {c \left (\frac {a x \left (-5 a^{2} x^{2}+15\right )}{15}-\frac {a x \left (-5 a^{4} x^{4}+5\right ) \arctan \left (\sqrt {a^{2} x^{2}}\right )}{5 \sqrt {a^{2} x^{2}}}\right )}{4 a^{4}}\) | \(118\) |
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Time = 0.25 (sec) , antiderivative size = 57, normalized size of antiderivative = 0.83 \[ \int x^3 \left (c+a^2 c x^2\right ) \arctan (a x) \, dx=-\frac {6 \, a^{5} c x^{5} + 5 \, a^{3} c x^{3} - 15 \, a c x - 15 \, {\left (2 \, a^{6} c x^{6} + 3 \, a^{4} c x^{4} - c\right )} \arctan \left (a x\right )}{180 \, a^{4}} \]
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Time = 0.32 (sec) , antiderivative size = 65, normalized size of antiderivative = 0.94 \[ \int x^3 \left (c+a^2 c x^2\right ) \arctan (a x) \, dx=\begin {cases} \frac {a^{2} c x^{6} \operatorname {atan}{\left (a x \right )}}{6} - \frac {a c x^{5}}{30} + \frac {c x^{4} \operatorname {atan}{\left (a x \right )}}{4} - \frac {c x^{3}}{36 a} + \frac {c x}{12 a^{3}} - \frac {c \operatorname {atan}{\left (a x \right )}}{12 a^{4}} & \text {for}\: a \neq 0 \\0 & \text {otherwise} \end {cases} \]
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Time = 0.28 (sec) , antiderivative size = 64, normalized size of antiderivative = 0.93 \[ \int x^3 \left (c+a^2 c x^2\right ) \arctan (a x) \, dx=-\frac {1}{180} \, a {\left (\frac {6 \, a^{4} c x^{5} + 5 \, a^{2} c x^{3} - 15 \, c x}{a^{4}} + \frac {15 \, c \arctan \left (a x\right )}{a^{5}}\right )} + \frac {1}{12} \, {\left (2 \, a^{2} c x^{6} + 3 \, c x^{4}\right )} \arctan \left (a x\right ) \]
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\[ \int x^3 \left (c+a^2 c x^2\right ) \arctan (a x) \, dx=\int { {\left (a^{2} c x^{2} + c\right )} x^{3} \arctan \left (a x\right ) \,d x } \]
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Time = 0.32 (sec) , antiderivative size = 57, normalized size of antiderivative = 0.83 \[ \int x^3 \left (c+a^2 c x^2\right ) \arctan (a x) \, dx=-\frac {c\,\left (15\,\mathrm {atan}\left (a\,x\right )-15\,a\,x+5\,a^3\,x^3+6\,a^5\,x^5-45\,a^4\,x^4\,\mathrm {atan}\left (a\,x\right )-30\,a^6\,x^6\,\mathrm {atan}\left (a\,x\right )\right )}{180\,a^4} \]
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