Integrand size = 19, antiderivative size = 81 \[ \int \frac {1}{\left (c+a^2 c x^2\right )^3 \arctan (a x)^3} \, dx=-\frac {1}{2 a c^3 \left (1+a^2 x^2\right )^2 \arctan (a x)^2}+\frac {2 x}{c^3 \left (1+a^2 x^2\right )^2 \arctan (a x)}-\frac {\operatorname {CosIntegral}(2 \arctan (a x))}{a c^3}-\frac {\operatorname {CosIntegral}(4 \arctan (a x))}{a c^3} \]
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Time = 0.19 (sec) , antiderivative size = 81, normalized size of antiderivative = 1.00, number of steps used = 11, number of rules used = 7, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.368, Rules used = {5022, 5088, 5090, 4491, 3383, 5024, 3393} \[ \int \frac {1}{\left (c+a^2 c x^2\right )^3 \arctan (a x)^3} \, dx=\frac {2 x}{c^3 \left (a^2 x^2+1\right )^2 \arctan (a x)}-\frac {1}{2 a c^3 \left (a^2 x^2+1\right )^2 \arctan (a x)^2}-\frac {\operatorname {CosIntegral}(2 \arctan (a x))}{a c^3}-\frac {\operatorname {CosIntegral}(4 \arctan (a x))}{a c^3} \]
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Rule 3383
Rule 3393
Rule 4491
Rule 5022
Rule 5024
Rule 5088
Rule 5090
Rubi steps \begin{align*} \text {integral}& = -\frac {1}{2 a c^3 \left (1+a^2 x^2\right )^2 \arctan (a x)^2}-(2 a) \int \frac {x}{\left (c+a^2 c x^2\right )^3 \arctan (a x)^2} \, dx \\ & = -\frac {1}{2 a c^3 \left (1+a^2 x^2\right )^2 \arctan (a x)^2}+\frac {2 x}{c^3 \left (1+a^2 x^2\right )^2 \arctan (a x)}-2 \int \frac {1}{\left (c+a^2 c x^2\right )^3 \arctan (a x)} \, dx+\left (6 a^2\right ) \int \frac {x^2}{\left (c+a^2 c x^2\right )^3 \arctan (a x)} \, dx \\ & = -\frac {1}{2 a c^3 \left (1+a^2 x^2\right )^2 \arctan (a x)^2}+\frac {2 x}{c^3 \left (1+a^2 x^2\right )^2 \arctan (a x)}-\frac {2 \text {Subst}\left (\int \frac {\cos ^4(x)}{x} \, dx,x,\arctan (a x)\right )}{a c^3}+\frac {6 \text {Subst}\left (\int \frac {\cos ^2(x) \sin ^2(x)}{x} \, dx,x,\arctan (a x)\right )}{a c^3} \\ & = -\frac {1}{2 a c^3 \left (1+a^2 x^2\right )^2 \arctan (a x)^2}+\frac {2 x}{c^3 \left (1+a^2 x^2\right )^2 \arctan (a x)}-\frac {2 \text {Subst}\left (\int \left (\frac {3}{8 x}+\frac {\cos (2 x)}{2 x}+\frac {\cos (4 x)}{8 x}\right ) \, dx,x,\arctan (a x)\right )}{a c^3}+\frac {6 \text {Subst}\left (\int \left (\frac {1}{8 x}-\frac {\cos (4 x)}{8 x}\right ) \, dx,x,\arctan (a x)\right )}{a c^3} \\ & = -\frac {1}{2 a c^3 \left (1+a^2 x^2\right )^2 \arctan (a x)^2}+\frac {2 x}{c^3 \left (1+a^2 x^2\right )^2 \arctan (a x)}-\frac {\text {Subst}\left (\int \frac {\cos (4 x)}{x} \, dx,x,\arctan (a x)\right )}{4 a c^3}-\frac {3 \text {Subst}\left (\int \frac {\cos (4 x)}{x} \, dx,x,\arctan (a x)\right )}{4 a c^3}-\frac {\text {Subst}\left (\int \frac {\cos (2 x)}{x} \, dx,x,\arctan (a x)\right )}{a c^3} \\ & = -\frac {1}{2 a c^3 \left (1+a^2 x^2\right )^2 \arctan (a x)^2}+\frac {2 x}{c^3 \left (1+a^2 x^2\right )^2 \arctan (a x)}-\frac {\operatorname {CosIntegral}(2 \arctan (a x))}{a c^3}-\frac {\operatorname {CosIntegral}(4 \arctan (a x))}{a c^3} \\ \end{align*}
Time = 0.14 (sec) , antiderivative size = 89, normalized size of antiderivative = 1.10 \[ \int \frac {1}{\left (c+a^2 c x^2\right )^3 \arctan (a x)^3} \, dx=-\frac {1-4 a x \arctan (a x)+2 \left (1+a^2 x^2\right )^2 \arctan (a x)^2 \operatorname {CosIntegral}(2 \arctan (a x))+2 \left (1+a^2 x^2\right )^2 \arctan (a x)^2 \operatorname {CosIntegral}(4 \arctan (a x))}{2 a c^3 \left (1+a^2 x^2\right )^2 \arctan (a x)^2} \]
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Time = 11.20 (sec) , antiderivative size = 89, normalized size of antiderivative = 1.10
method | result | size |
derivativedivides | \(-\frac {16 \,\operatorname {Ci}\left (4 \arctan \left (a x \right )\right ) \arctan \left (a x \right )^{2}+16 \,\operatorname {Ci}\left (2 \arctan \left (a x \right )\right ) \arctan \left (a x \right )^{2}-4 \sin \left (4 \arctan \left (a x \right )\right ) \arctan \left (a x \right )-8 \sin \left (2 \arctan \left (a x \right )\right ) \arctan \left (a x \right )+4 \cos \left (2 \arctan \left (a x \right )\right )+\cos \left (4 \arctan \left (a x \right )\right )+3}{16 a \,c^{3} \arctan \left (a x \right )^{2}}\) | \(89\) |
default | \(-\frac {16 \,\operatorname {Ci}\left (4 \arctan \left (a x \right )\right ) \arctan \left (a x \right )^{2}+16 \,\operatorname {Ci}\left (2 \arctan \left (a x \right )\right ) \arctan \left (a x \right )^{2}-4 \sin \left (4 \arctan \left (a x \right )\right ) \arctan \left (a x \right )-8 \sin \left (2 \arctan \left (a x \right )\right ) \arctan \left (a x \right )+4 \cos \left (2 \arctan \left (a x \right )\right )+\cos \left (4 \arctan \left (a x \right )\right )+3}{16 a \,c^{3} \arctan \left (a x \right )^{2}}\) | \(89\) |
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Result contains complex when optimal does not.
Time = 0.26 (sec) , antiderivative size = 297, normalized size of antiderivative = 3.67 \[ \int \frac {1}{\left (c+a^2 c x^2\right )^3 \arctan (a x)^3} \, dx=-\frac {{\left (a^{4} x^{4} + 2 \, a^{2} x^{2} + 1\right )} \arctan \left (a x\right )^{2} \operatorname {log\_integral}\left (\frac {a^{4} x^{4} + 4 i \, a^{3} x^{3} - 6 \, a^{2} x^{2} - 4 i \, a x + 1}{a^{4} x^{4} + 2 \, a^{2} x^{2} + 1}\right ) + {\left (a^{4} x^{4} + 2 \, a^{2} x^{2} + 1\right )} \arctan \left (a x\right )^{2} \operatorname {log\_integral}\left (\frac {a^{4} x^{4} - 4 i \, a^{3} x^{3} - 6 \, a^{2} x^{2} + 4 i \, a x + 1}{a^{4} x^{4} + 2 \, a^{2} x^{2} + 1}\right ) + {\left (a^{4} x^{4} + 2 \, a^{2} x^{2} + 1\right )} \arctan \left (a x\right )^{2} \operatorname {log\_integral}\left (-\frac {a^{2} x^{2} + 2 i \, a x - 1}{a^{2} x^{2} + 1}\right ) + {\left (a^{4} x^{4} + 2 \, a^{2} x^{2} + 1\right )} \arctan \left (a x\right )^{2} \operatorname {log\_integral}\left (-\frac {a^{2} x^{2} - 2 i \, a x - 1}{a^{2} x^{2} + 1}\right ) - 4 \, a x \arctan \left (a x\right ) + 1}{2 \, {\left (a^{5} c^{3} x^{4} + 2 \, a^{3} c^{3} x^{2} + a c^{3}\right )} \arctan \left (a x\right )^{2}} \]
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\[ \int \frac {1}{\left (c+a^2 c x^2\right )^3 \arctan (a x)^3} \, dx=\frac {\int \frac {1}{a^{6} x^{6} \operatorname {atan}^{3}{\left (a x \right )} + 3 a^{4} x^{4} \operatorname {atan}^{3}{\left (a x \right )} + 3 a^{2} x^{2} \operatorname {atan}^{3}{\left (a x \right )} + \operatorname {atan}^{3}{\left (a x \right )}}\, dx}{c^{3}} \]
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\[ \int \frac {1}{\left (c+a^2 c x^2\right )^3 \arctan (a x)^3} \, dx=\int { \frac {1}{{\left (a^{2} c x^{2} + c\right )}^{3} \arctan \left (a x\right )^{3}} \,d x } \]
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\[ \int \frac {1}{\left (c+a^2 c x^2\right )^3 \arctan (a x)^3} \, dx=\int { \frac {1}{{\left (a^{2} c x^{2} + c\right )}^{3} \arctan \left (a x\right )^{3}} \,d x } \]
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Timed out. \[ \int \frac {1}{\left (c+a^2 c x^2\right )^3 \arctan (a x)^3} \, dx=\int \frac {1}{{\mathrm {atan}\left (a\,x\right )}^3\,{\left (c\,a^2\,x^2+c\right )}^3} \,d x \]
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