Optimal. Leaf size=81 \[ \frac{2 x}{c^3 \left (a^2 x^2+1\right )^2 \tan ^{-1}(a x)}-\frac{1}{2 a c^3 \left (a^2 x^2+1\right )^2 \tan ^{-1}(a x)^2}-\frac{\text{CosIntegral}\left (2 \tan ^{-1}(a x)\right )}{a c^3}-\frac{\text{CosIntegral}\left (4 \tan ^{-1}(a x)\right )}{a c^3} \]
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Rubi [A] time = 0.265952, antiderivative size = 81, normalized size of antiderivative = 1., number of steps used = 11, number of rules used = 7, integrand size = 19, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.368, Rules used = {4902, 4968, 4970, 4406, 3302, 4904, 3312} \[ \frac{2 x}{c^3 \left (a^2 x^2+1\right )^2 \tan ^{-1}(a x)}-\frac{1}{2 a c^3 \left (a^2 x^2+1\right )^2 \tan ^{-1}(a x)^2}-\frac{\text{CosIntegral}\left (2 \tan ^{-1}(a x)\right )}{a c^3}-\frac{\text{CosIntegral}\left (4 \tan ^{-1}(a x)\right )}{a c^3} \]
Antiderivative was successfully verified.
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Rule 4902
Rule 4968
Rule 4970
Rule 4406
Rule 3302
Rule 4904
Rule 3312
Rubi steps
\begin{align*} \int \frac{1}{\left (c+a^2 c x^2\right )^3 \tan ^{-1}(a x)^3} \, dx &=-\frac{1}{2 a c^3 \left (1+a^2 x^2\right )^2 \tan ^{-1}(a x)^2}-(2 a) \int \frac{x}{\left (c+a^2 c x^2\right )^3 \tan ^{-1}(a x)^2} \, dx\\ &=-\frac{1}{2 a c^3 \left (1+a^2 x^2\right )^2 \tan ^{-1}(a x)^2}+\frac{2 x}{c^3 \left (1+a^2 x^2\right )^2 \tan ^{-1}(a x)}-2 \int \frac{1}{\left (c+a^2 c x^2\right )^3 \tan ^{-1}(a x)} \, dx+\left (6 a^2\right ) \int \frac{x^2}{\left (c+a^2 c x^2\right )^3 \tan ^{-1}(a x)} \, dx\\ &=-\frac{1}{2 a c^3 \left (1+a^2 x^2\right )^2 \tan ^{-1}(a x)^2}+\frac{2 x}{c^3 \left (1+a^2 x^2\right )^2 \tan ^{-1}(a x)}-\frac{2 \operatorname{Subst}\left (\int \frac{\cos ^4(x)}{x} \, dx,x,\tan ^{-1}(a x)\right )}{a c^3}+\frac{6 \operatorname{Subst}\left (\int \frac{\cos ^2(x) \sin ^2(x)}{x} \, dx,x,\tan ^{-1}(a x)\right )}{a c^3}\\ &=-\frac{1}{2 a c^3 \left (1+a^2 x^2\right )^2 \tan ^{-1}(a x)^2}+\frac{2 x}{c^3 \left (1+a^2 x^2\right )^2 \tan ^{-1}(a x)}-\frac{2 \operatorname{Subst}\left (\int \left (\frac{3}{8 x}+\frac{\cos (2 x)}{2 x}+\frac{\cos (4 x)}{8 x}\right ) \, dx,x,\tan ^{-1}(a x)\right )}{a c^3}+\frac{6 \operatorname{Subst}\left (\int \left (\frac{1}{8 x}-\frac{\cos (4 x)}{8 x}\right ) \, dx,x,\tan ^{-1}(a x)\right )}{a c^3}\\ &=-\frac{1}{2 a c^3 \left (1+a^2 x^2\right )^2 \tan ^{-1}(a x)^2}+\frac{2 x}{c^3 \left (1+a^2 x^2\right )^2 \tan ^{-1}(a x)}-\frac{\operatorname{Subst}\left (\int \frac{\cos (4 x)}{x} \, dx,x,\tan ^{-1}(a x)\right )}{4 a c^3}-\frac{3 \operatorname{Subst}\left (\int \frac{\cos (4 x)}{x} \, dx,x,\tan ^{-1}(a x)\right )}{4 a c^3}-\frac{\operatorname{Subst}\left (\int \frac{\cos (2 x)}{x} \, dx,x,\tan ^{-1}(a x)\right )}{a c^3}\\ &=-\frac{1}{2 a c^3 \left (1+a^2 x^2\right )^2 \tan ^{-1}(a x)^2}+\frac{2 x}{c^3 \left (1+a^2 x^2\right )^2 \tan ^{-1}(a x)}-\frac{\text{Ci}\left (2 \tan ^{-1}(a x)\right )}{a c^3}-\frac{\text{Ci}\left (4 \tan ^{-1}(a x)\right )}{a c^3}\\ \end{align*}
Mathematica [A] time = 0.0934862, size = 89, normalized size = 1.1 \[ -\frac{2 \left (a^2 x^2+1\right )^2 \tan ^{-1}(a x)^2 \text{CosIntegral}\left (2 \tan ^{-1}(a x)\right )+2 \left (a^2 x^2+1\right )^2 \tan ^{-1}(a x)^2 \text{CosIntegral}\left (4 \tan ^{-1}(a x)\right )-4 a x \tan ^{-1}(a x)+1}{2 a c^3 \left (a^2 x^2+1\right )^2 \tan ^{-1}(a x)^2} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.067, size = 89, normalized size = 1.1 \begin{align*} -{\frac{16\,{\it Ci} \left ( 2\,\arctan \left ( ax \right ) \right ) \left ( \arctan \left ( ax \right ) \right ) ^{2}+16\,{\it Ci} \left ( 4\,\arctan \left ( ax \right ) \right ) \left ( \arctan \left ( ax \right ) \right ) ^{2}-8\,\sin \left ( 2\,\arctan \left ( ax \right ) \right ) \arctan \left ( ax \right ) -4\,\sin \left ( 4\,\arctan \left ( ax \right ) \right ) \arctan \left ( ax \right ) +4\,\cos \left ( 2\,\arctan \left ( ax \right ) \right ) +\cos \left ( 4\,\arctan \left ( ax \right ) \right ) +3}{16\,a{c}^{3} \left ( \arctan \left ( ax \right ) \right ) ^{2}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \frac{4 \,{\left (a^{5} c^{3} x^{4} + 2 \, a^{3} c^{3} x^{2} + a c^{3}\right )} \arctan \left (a x\right )^{2} \int \frac{3 \, a^{2} x^{2} - 1}{{\left (a^{6} c^{3} x^{6} + 3 \, a^{4} c^{3} x^{4} + 3 \, a^{2} c^{3} x^{2} + c^{3}\right )} \arctan \left (a x\right )}\,{d x} + 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}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [C] time = 1.75905, size = 726, normalized size = 8.96 \begin{align*} -\frac{{\left (a^{4} x^{4} + 2 \, a^{2} x^{2} + 1\right )} \arctan \left (a x\right )^{2} \logintegral \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} \logintegral \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} \logintegral \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} \logintegral \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}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \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}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{1}{{\left (a^{2} c x^{2} + c\right )}^{3} \arctan \left (a x\right )^{3}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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