Optimal. Leaf size=170 \[ \frac{i b^2 \text{PolyLog}\left (2,1-\frac{2}{1+i c x}\right )}{5 c^5}+\frac{b x^2 \left (a+b \tan ^{-1}(c x)\right )}{5 c^3}+\frac{i \left (a+b \tan ^{-1}(c x)\right )^2}{5 c^5}+\frac{2 b \log \left (\frac{2}{1+i c x}\right ) \left (a+b \tan ^{-1}(c x)\right )}{5 c^5}+\frac{1}{5} x^5 \left (a+b \tan ^{-1}(c x)\right )^2-\frac{b x^4 \left (a+b \tan ^{-1}(c x)\right )}{10 c}+\frac{b^2 x^3}{30 c^2}-\frac{3 b^2 x}{10 c^4}+\frac{3 b^2 \tan ^{-1}(c x)}{10 c^5} \]
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Rubi [A] time = 0.288737, antiderivative size = 170, normalized size of antiderivative = 1., number of steps used = 14, number of rules used = 9, integrand size = 14, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.643, Rules used = {4852, 4916, 302, 203, 321, 4920, 4854, 2402, 2315} \[ \frac{i b^2 \text{PolyLog}\left (2,1-\frac{2}{1+i c x}\right )}{5 c^5}+\frac{b x^2 \left (a+b \tan ^{-1}(c x)\right )}{5 c^3}+\frac{i \left (a+b \tan ^{-1}(c x)\right )^2}{5 c^5}+\frac{2 b \log \left (\frac{2}{1+i c x}\right ) \left (a+b \tan ^{-1}(c x)\right )}{5 c^5}+\frac{1}{5} x^5 \left (a+b \tan ^{-1}(c x)\right )^2-\frac{b x^4 \left (a+b \tan ^{-1}(c x)\right )}{10 c}+\frac{b^2 x^3}{30 c^2}-\frac{3 b^2 x}{10 c^4}+\frac{3 b^2 \tan ^{-1}(c x)}{10 c^5} \]
Antiderivative was successfully verified.
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Rule 4852
Rule 4916
Rule 302
Rule 203
Rule 321
Rule 4920
Rule 4854
Rule 2402
Rule 2315
Rubi steps
\begin{align*} \int x^4 \left (a+b \tan ^{-1}(c x)\right )^2 \, dx &=\frac{1}{5} x^5 \left (a+b \tan ^{-1}(c x)\right )^2-\frac{1}{5} (2 b c) \int \frac{x^5 \left (a+b \tan ^{-1}(c x)\right )}{1+c^2 x^2} \, dx\\ &=\frac{1}{5} x^5 \left (a+b \tan ^{-1}(c x)\right )^2-\frac{(2 b) \int x^3 \left (a+b \tan ^{-1}(c x)\right ) \, dx}{5 c}+\frac{(2 b) \int \frac{x^3 \left (a+b \tan ^{-1}(c x)\right )}{1+c^2 x^2} \, dx}{5 c}\\ &=-\frac{b x^4 \left (a+b \tan ^{-1}(c x)\right )}{10 c}+\frac{1}{5} x^5 \left (a+b \tan ^{-1}(c x)\right )^2+\frac{1}{10} b^2 \int \frac{x^4}{1+c^2 x^2} \, dx+\frac{(2 b) \int x \left (a+b \tan ^{-1}(c x)\right ) \, dx}{5 c^3}-\frac{(2 b) \int \frac{x \left (a+b \tan ^{-1}(c x)\right )}{1+c^2 x^2} \, dx}{5 c^3}\\ &=\frac{b x^2 \left (a+b \tan ^{-1}(c x)\right )}{5 c^3}-\frac{b x^4 \left (a+b \tan ^{-1}(c x)\right )}{10 c}+\frac{i \left (a+b \tan ^{-1}(c x)\right )^2}{5 c^5}+\frac{1}{5} x^5 \left (a+b \tan ^{-1}(c x)\right )^2+\frac{1}{10} b^2 \int \left (-\frac{1}{c^4}+\frac{x^2}{c^2}+\frac{1}{c^4 \left (1+c^2 x^2\right )}\right ) \, dx+\frac{(2 b) \int \frac{a+b \tan ^{-1}(c x)}{i-c x} \, dx}{5 c^4}-\frac{b^2 \int \frac{x^2}{1+c^2 x^2} \, dx}{5 c^2}\\ &=-\frac{3 b^2 x}{10 c^4}+\frac{b^2 x^3}{30 c^2}+\frac{b x^2 \left (a+b \tan ^{-1}(c x)\right )}{5 c^3}-\frac{b x^4 \left (a+b \tan ^{-1}(c x)\right )}{10 c}+\frac{i \left (a+b \tan ^{-1}(c x)\right )^2}{5 c^5}+\frac{1}{5} x^5 \left (a+b \tan ^{-1}(c x)\right )^2+\frac{2 b \left (a+b \tan ^{-1}(c x)\right ) \log \left (\frac{2}{1+i c x}\right )}{5 c^5}+\frac{b^2 \int \frac{1}{1+c^2 x^2} \, dx}{10 c^4}+\frac{b^2 \int \frac{1}{1+c^2 x^2} \, dx}{5 c^4}-\frac{\left (2 b^2\right ) \int \frac{\log \left (\frac{2}{1+i c x}\right )}{1+c^2 x^2} \, dx}{5 c^4}\\ &=-\frac{3 b^2 x}{10 c^4}+\frac{b^2 x^3}{30 c^2}+\frac{3 b^2 \tan ^{-1}(c x)}{10 c^5}+\frac{b x^2 \left (a+b \tan ^{-1}(c x)\right )}{5 c^3}-\frac{b x^4 \left (a+b \tan ^{-1}(c x)\right )}{10 c}+\frac{i \left (a+b \tan ^{-1}(c x)\right )^2}{5 c^5}+\frac{1}{5} x^5 \left (a+b \tan ^{-1}(c x)\right )^2+\frac{2 b \left (a+b \tan ^{-1}(c x)\right ) \log \left (\frac{2}{1+i c x}\right )}{5 c^5}+\frac{\left (2 i b^2\right ) \operatorname{Subst}\left (\int \frac{\log (2 x)}{1-2 x} \, dx,x,\frac{1}{1+i c x}\right )}{5 c^5}\\ &=-\frac{3 b^2 x}{10 c^4}+\frac{b^2 x^3}{30 c^2}+\frac{3 b^2 \tan ^{-1}(c x)}{10 c^5}+\frac{b x^2 \left (a+b \tan ^{-1}(c x)\right )}{5 c^3}-\frac{b x^4 \left (a+b \tan ^{-1}(c x)\right )}{10 c}+\frac{i \left (a+b \tan ^{-1}(c x)\right )^2}{5 c^5}+\frac{1}{5} x^5 \left (a+b \tan ^{-1}(c x)\right )^2+\frac{2 b \left (a+b \tan ^{-1}(c x)\right ) \log \left (\frac{2}{1+i c x}\right )}{5 c^5}+\frac{i b^2 \text{Li}_2\left (1-\frac{2}{1+i c x}\right )}{5 c^5}\\ \end{align*}
Mathematica [A] time = 0.484662, size = 169, normalized size = 0.99 \[ \frac{-6 i b^2 \text{PolyLog}\left (2,-e^{2 i \tan ^{-1}(c x)}\right )+6 a^2 c^5 x^5-3 a b c^4 x^4+6 a b c^2 x^2-6 a b \log \left (c^2 x^2+1\right )-3 b \tan ^{-1}(c x) \left (-4 a c^5 x^5+b \left (c^4 x^4-2 c^2 x^2-3\right )-4 b \log \left (1+e^{2 i \tan ^{-1}(c x)}\right )\right )+9 a b+b^2 c^3 x^3+6 b^2 \left (c^5 x^5-i\right ) \tan ^{-1}(c x)^2-9 b^2 c x}{30 c^5} \]
Warning: Unable to verify antiderivative.
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Maple [B] time = 0.044, size = 334, normalized size = 2. \begin{align*}{\frac{{x}^{5}{a}^{2}}{5}}+{\frac{{x}^{5}{b}^{2} \left ( \arctan \left ( cx \right ) \right ) ^{2}}{5}}-{\frac{{b}^{2}\arctan \left ( cx \right ){x}^{4}}{10\,c}}+{\frac{{b}^{2}\arctan \left ( cx \right ){x}^{2}}{5\,{c}^{3}}}-{\frac{{b}^{2}\arctan \left ( cx \right ) \ln \left ({c}^{2}{x}^{2}+1 \right ) }{5\,{c}^{5}}}+{\frac{{b}^{2}{x}^{3}}{30\,{c}^{2}}}-{\frac{3\,{b}^{2}x}{10\,{c}^{4}}}+{\frac{3\,{b}^{2}\arctan \left ( cx \right ) }{10\,{c}^{5}}}+{\frac{{\frac{i}{10}}{b}^{2}{\it dilog} \left ( -{\frac{i}{2}} \left ( cx+i \right ) \right ) }{{c}^{5}}}-{\frac{{\frac{i}{10}}{b}^{2}\ln \left ({c}^{2}{x}^{2}+1 \right ) \ln \left ( cx-i \right ) }{{c}^{5}}}+{\frac{{\frac{i}{20}}{b}^{2} \left ( \ln \left ( cx-i \right ) \right ) ^{2}}{{c}^{5}}}+{\frac{{\frac{i}{10}}{b}^{2}\ln \left ( cx-i \right ) \ln \left ( -{\frac{i}{2}} \left ( cx+i \right ) \right ) }{{c}^{5}}}-{\frac{{\frac{i}{10}}{b}^{2}\ln \left ( cx+i \right ) \ln \left ({\frac{i}{2}} \left ( cx-i \right ) \right ) }{{c}^{5}}}-{\frac{{\frac{i}{10}}{b}^{2}{\it dilog} \left ({\frac{i}{2}} \left ( cx-i \right ) \right ) }{{c}^{5}}}+{\frac{{\frac{i}{10}}{b}^{2}\ln \left ({c}^{2}{x}^{2}+1 \right ) \ln \left ( cx+i \right ) }{{c}^{5}}}-{\frac{{\frac{i}{20}}{b}^{2} \left ( \ln \left ( cx+i \right ) \right ) ^{2}}{{c}^{5}}}+{\frac{2\,{x}^{5}ab\arctan \left ( cx \right ) }{5}}-{\frac{{x}^{4}ab}{10\,c}}+{\frac{ab{x}^{2}}{5\,{c}^{3}}}-{\frac{ab\ln \left ({c}^{2}{x}^{2}+1 \right ) }{5\,{c}^{5}}} \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{1}{5} \, a^{2} x^{5} + \frac{1}{10} \,{\left (4 \, x^{5} \arctan \left (c x\right ) - c{\left (\frac{c^{2} x^{4} - 2 \, x^{2}}{c^{4}} + \frac{2 \, \log \left (c^{2} x^{2} + 1\right )}{c^{6}}\right )}\right )} a b + \frac{1}{80} \,{\left (4 \, x^{5} \arctan \left (c x\right )^{2} - x^{5} \log \left (c^{2} x^{2} + 1\right )^{2} + 80 \, \int \frac{4 \, c^{2} x^{6} \log \left (c^{2} x^{2} + 1\right ) - 8 \, c x^{5} \arctan \left (c x\right ) + 60 \,{\left (c^{2} x^{6} + x^{4}\right )} \arctan \left (c x\right )^{2} + 5 \,{\left (c^{2} x^{6} + x^{4}\right )} \log \left (c^{2} x^{2} + 1\right )^{2}}{80 \,{\left (c^{2} x^{2} + 1\right )}}\,{d x}\right )} b^{2} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F] time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (b^{2} x^{4} \arctan \left (c x\right )^{2} + 2 \, a b x^{4} \arctan \left (c x\right ) + a^{2} x^{4}, x\right ) \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*} \int x^{4} \left (a + b \operatorname{atan}{\left (c x \right )}\right )^{2}\, dx \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{\left (b \arctan \left (c x\right ) + a\right )}^{2} x^{4}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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