Optimal. Leaf size=245 \[ -\frac{c \left (\frac{b}{c}+x\right )}{3 b \left (b^2-3 a c\right ) \left (3 a b+3 b^2 x+3 b c x^2+c^2 x^3\right )}+\frac{c \log \left (\sqrt [3]{b} c \sqrt [3]{b^2-3 a c} \left (\frac{b}{c}+x\right )+b^{2/3} \left (b^2-3 a c\right )^{2/3}+c^2 \left (\frac{b}{c}+x\right )^2\right )}{9 b^{5/3} \left (b^2-3 a c\right )^{5/3}}-\frac{2 c \log \left (-\sqrt [3]{b} \sqrt [3]{b^2-3 a c}+b+c x\right )}{9 b^{5/3} \left (b^2-3 a c\right )^{5/3}}+\frac{2 c \tan ^{-1}\left (\frac{\frac{2 (b+c x)}{\sqrt [3]{b^2-3 a c}}+\sqrt [3]{b}}{\sqrt{3} \sqrt [3]{b}}\right )}{3 \sqrt{3} b^{5/3} \left (b^2-3 a c\right )^{5/3}} \]
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Rubi [A] time = 0.248543, antiderivative size = 245, normalized size of antiderivative = 1., number of steps used = 8, number of rules used = 8, integrand size = 27, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.296, Rules used = {2067, 199, 200, 31, 634, 617, 204, 628} \[ -\frac{c \left (\frac{b}{c}+x\right )}{3 b \left (b^2-3 a c\right ) \left (3 a b+3 b^2 x+3 b c x^2+c^2 x^3\right )}+\frac{c \log \left (\sqrt [3]{b} c \sqrt [3]{b^2-3 a c} \left (\frac{b}{c}+x\right )+b^{2/3} \left (b^2-3 a c\right )^{2/3}+c^2 \left (\frac{b}{c}+x\right )^2\right )}{9 b^{5/3} \left (b^2-3 a c\right )^{5/3}}-\frac{2 c \log \left (-\sqrt [3]{b} \sqrt [3]{b^2-3 a c}+b+c x\right )}{9 b^{5/3} \left (b^2-3 a c\right )^{5/3}}+\frac{2 c \tan ^{-1}\left (\frac{\frac{2 (b+c x)}{\sqrt [3]{b^2-3 a c}}+\sqrt [3]{b}}{\sqrt{3} \sqrt [3]{b}}\right )}{3 \sqrt{3} b^{5/3} \left (b^2-3 a c\right )^{5/3}} \]
Antiderivative was successfully verified.
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Rule 2067
Rule 199
Rule 200
Rule 31
Rule 634
Rule 617
Rule 204
Rule 628
Rubi steps
\begin{align*} \int \frac{1}{\left (3 a b+3 b^2 x+3 b c x^2+c^2 x^3\right )^2} \, dx &=\operatorname{Subst}\left (\int \frac{1}{\left (b \left (3 a-\frac{b^2}{c}\right )+c^2 x^3\right )^2} \, dx,x,\frac{b}{c}+x\right )\\ &=-\frac{c \left (\frac{b}{c}+x\right )}{3 b \left (b^2-3 a c\right ) \left (3 a b+3 b^2 x+3 b c x^2+c^2 x^3\right )}-\frac{(2 c) \operatorname{Subst}\left (\int \frac{1}{b \left (3 a-\frac{b^2}{c}\right )+c^2 x^3} \, dx,x,\frac{b}{c}+x\right )}{3 b \left (b^2-3 a c\right )}\\ &=-\frac{c \left (\frac{b}{c}+x\right )}{3 b \left (b^2-3 a c\right ) \left (3 a b+3 b^2 x+3 b c x^2+c^2 x^3\right )}-\frac{\left (2 c^{5/3}\right ) \operatorname{Subst}\left (\int \frac{1}{-\frac{\sqrt [3]{b} \sqrt [3]{b^2-3 a c}}{\sqrt [3]{c}}+c^{2/3} x} \, dx,x,\frac{b}{c}+x\right )}{9 b^{5/3} \left (b^2-3 a c\right )^{5/3}}-\frac{\left (2 c^{5/3}\right ) \operatorname{Subst}\left (\int \frac{-\frac{2 \sqrt [3]{b} \sqrt [3]{b^2-3 a c}}{\sqrt [3]{c}}-c^{2/3} x}{\frac{b^{2/3} \left (b^2-3 a c\right )^{2/3}}{c^{2/3}}+\sqrt [3]{b} \sqrt [3]{c} \sqrt [3]{b^2-3 a c} x+c^{4/3} x^2} \, dx,x,\frac{b}{c}+x\right )}{9 b^{5/3} \left (b^2-3 a c\right )^{5/3}}\\ &=-\frac{c \left (\frac{b}{c}+x\right )}{3 b \left (b^2-3 a c\right ) \left (3 a b+3 b^2 x+3 b c x^2+c^2 x^3\right )}-\frac{2 c \log \left (\sqrt [3]{b} \left (b^{2/3}-\sqrt [3]{b^2-3 a c}\right )+c x\right )}{9 b^{5/3} \left (b^2-3 a c\right )^{5/3}}+\frac{c \operatorname{Subst}\left (\int \frac{\sqrt [3]{b} \sqrt [3]{c} \sqrt [3]{b^2-3 a c}+2 c^{4/3} x}{\frac{b^{2/3} \left (b^2-3 a c\right )^{2/3}}{c^{2/3}}+\sqrt [3]{b} \sqrt [3]{c} \sqrt [3]{b^2-3 a c} x+c^{4/3} x^2} \, dx,x,\frac{b}{c}+x\right )}{9 b^{5/3} \left (b^2-3 a c\right )^{5/3}}+\frac{c^{4/3} \operatorname{Subst}\left (\int \frac{1}{\frac{b^{2/3} \left (b^2-3 a c\right )^{2/3}}{c^{2/3}}+\sqrt [3]{b} \sqrt [3]{c} \sqrt [3]{b^2-3 a c} x+c^{4/3} x^2} \, dx,x,\frac{b}{c}+x\right )}{3 b^{4/3} \left (b^2-3 a c\right )^{4/3}}\\ &=-\frac{c \left (\frac{b}{c}+x\right )}{3 b \left (b^2-3 a c\right ) \left (3 a b+3 b^2 x+3 b c x^2+c^2 x^3\right )}-\frac{2 c \log \left (\sqrt [3]{b} \left (b^{2/3}-\sqrt [3]{b^2-3 a c}\right )+c x\right )}{9 b^{5/3} \left (b^2-3 a c\right )^{5/3}}+\frac{c \log \left (b^{2/3} \left (b^2-3 a c\right )^{2/3}+\sqrt [3]{b} \sqrt [3]{b^2-3 a c} (b+c x)+(b+c x)^2\right )}{9 b^{5/3} \left (b^2-3 a c\right )^{5/3}}-\frac{(2 c) \operatorname{Subst}\left (\int \frac{1}{-3-x^2} \, dx,x,1+\frac{2 c \left (\frac{b}{c}+x\right )}{\sqrt [3]{b} \sqrt [3]{b^2-3 a c}}\right )}{3 b^{5/3} \left (b^2-3 a c\right )^{5/3}}\\ &=-\frac{c \left (\frac{b}{c}+x\right )}{3 b \left (b^2-3 a c\right ) \left (3 a b+3 b^2 x+3 b c x^2+c^2 x^3\right )}+\frac{2 c \tan ^{-1}\left (\frac{1+\frac{2 (b+c x)}{\sqrt [3]{b} \sqrt [3]{b^2-3 a c}}}{\sqrt{3}}\right )}{3 \sqrt{3} b^{5/3} \left (b^2-3 a c\right )^{5/3}}-\frac{2 c \log \left (\sqrt [3]{b} \left (b^{2/3}-\sqrt [3]{b^2-3 a c}\right )+c x\right )}{9 b^{5/3} \left (b^2-3 a c\right )^{5/3}}+\frac{c \log \left (b^{2/3} \left (b^2-3 a c\right )^{2/3}+\sqrt [3]{b} \sqrt [3]{b^2-3 a c} (b+c x)+(b+c x)^2\right )}{9 b^{5/3} \left (b^2-3 a c\right )^{5/3}}\\ \end{align*}
Mathematica [C] time = 0.054183, size = 112, normalized size = 0.46 \[ -\frac{2 c \text{RootSum}\left [3 \text{$\#$1}^2 b c+\text{$\#$1}^3 c^2+3 \text{$\#$1} b^2+3 a b\& ,\frac{\log (x-\text{$\#$1})}{\text{$\#$1}^2 c^2+2 \text{$\#$1} b c+b^2}\& \right ]+\frac{3 (b+c x)}{3 a b+x \left (3 b^2+3 b c x+c^2 x^2\right )}}{9 \left (b^3-3 a b c\right )} \]
Antiderivative was successfully verified.
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Maple [C] time = 0.007, size = 136, normalized size = 0.6 \begin{align*}{\frac{1}{{c}^{2}{x}^{3}+3\,bc{x}^{2}+3\,{b}^{2}x+3\,ab} \left ({\frac{cx}{3\,b \left ( 3\,ac-{b}^{2} \right ) }}+{\frac{1}{9\,ac-3\,{b}^{2}}} \right ) }+{\frac{2\,c}{9\,b \left ( 3\,ac-{b}^{2} \right ) }\sum _{{\it \_R}={\it RootOf} \left ({{\it \_Z}}^{3}{c}^{2}+3\,{{\it \_Z}}^{2}bc+3\,{\it \_Z}\,{b}^{2}+3\,ab \right ) }{\frac{\ln \left ( x-{\it \_R} \right ) }{{{\it \_R}}^{2}{c}^{2}+2\,{\it \_R}\,bc+{b}^{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{\frac{1}{3} \,{\left (\frac{2 \, \sqrt{3} \arctan \left (\frac{\sqrt{3} c x + \sqrt{3} b - \sqrt{3}{\left (-b^{3} + 3 \, a b c\right )}^{\frac{1}{3}}}{c x + b +{\left (-b^{3} + 3 \, a b c\right )}^{\frac{1}{3}}}\right )}{{\left (b^{6} - 6 \, a b^{4} c + 9 \, a^{2} b^{2} c^{2}\right )}^{\frac{1}{3}}} - \frac{\log \left ({\left (\sqrt{3} c x + \sqrt{3} b - \sqrt{3}{\left (-b^{3} + 3 \, a b c\right )}^{\frac{1}{3}}\right )}^{2} +{\left (c x + b +{\left (-b^{3} + 3 \, a b c\right )}^{\frac{1}{3}}\right )}^{2}\right )}{{\left (b^{6} - 6 \, a b^{4} c + 9 \, a^{2} b^{2} c^{2}\right )}^{\frac{1}{3}}} + \frac{2 \, \log \left ({\left | c x + b +{\left (-b^{3} + 3 \, a b c\right )}^{\frac{1}{3}} \right |}\right )}{{\left (b^{6} - 6 \, a b^{4} c + 9 \, a^{2} b^{2} c^{2}\right )}^{\frac{1}{3}}}\right )} c}{3 \,{\left (b^{3} - 3 \, a b c\right )}} - \frac{c x + b}{3 \,{\left (3 \, a b^{4} - 9 \, a^{2} b^{2} c +{\left (b^{3} c^{2} - 3 \, a b c^{3}\right )} x^{3} + 3 \,{\left (b^{4} c - 3 \, a b^{2} c^{2}\right )} x^{2} + 3 \,{\left (b^{5} - 3 \, a b^{3} c\right )} x\right )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] time = 1.44711, size = 1536, normalized size = 6.27 \begin{align*} \text{result too large to display} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 1.49114, size = 192, normalized size = 0.78 \begin{align*} \frac{b + c x}{27 a^{2} b^{2} c - 9 a b^{4} + x^{3} \left (9 a b c^{3} - 3 b^{3} c^{2}\right ) + x^{2} \left (27 a b^{2} c^{2} - 9 b^{4} c\right ) + x \left (27 a b^{3} c - 9 b^{5}\right )} + \operatorname{RootSum}{\left (t^{3} \left (177147 a^{5} b^{5} c^{5} - 295245 a^{4} b^{7} c^{4} + 196830 a^{3} b^{9} c^{3} - 65610 a^{2} b^{11} c^{2} + 10935 a b^{13} c - 729 b^{15}\right ) - 8 c^{3}, \left ( t \mapsto t \log{\left (x + \frac{81 t a^{2} b^{2} c^{2} - 54 t a b^{4} c + 9 t b^{6} + 2 b c}{2 c^{2}} \right )} \right )\right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [B] time = 1.1683, size = 551, normalized size = 2.25 \begin{align*} \frac{2}{9} \, \sqrt{3} \left (-\frac{c^{3}}{b^{15} - 15 \, a b^{13} c + 90 \, a^{2} b^{11} c^{2} - 270 \, a^{3} b^{9} c^{3} + 405 \, a^{4} b^{7} c^{4} - 243 \, a^{5} b^{5} c^{5}}\right )^{\frac{1}{3}} \arctan \left (\frac{\sqrt{3} c x + \sqrt{3} b - \sqrt{3}{\left (-b^{3} + 3 \, a b c\right )}^{\frac{1}{3}}}{c x + b +{\left (-b^{3} + 3 \, a b c\right )}^{\frac{1}{3}}}\right ) - \frac{1}{9} \, \left (-\frac{c^{3}}{b^{15} - 15 \, a b^{13} c + 90 \, a^{2} b^{11} c^{2} - 270 \, a^{3} b^{9} c^{3} + 405 \, a^{4} b^{7} c^{4} - 243 \, a^{5} b^{5} c^{5}}\right )^{\frac{1}{3}} \log \left ({\left (\sqrt{3} c x + \sqrt{3} b - \sqrt{3}{\left (-b^{3} + 3 \, a b c\right )}^{\frac{1}{3}}\right )}^{2} +{\left (c x + b +{\left (-b^{3} + 3 \, a b c\right )}^{\frac{1}{3}}\right )}^{2}\right ) + \frac{2}{9} \, \left (-\frac{c^{3}}{b^{15} - 15 \, a b^{13} c + 90 \, a^{2} b^{11} c^{2} - 270 \, a^{3} b^{9} c^{3} + 405 \, a^{4} b^{7} c^{4} - 243 \, a^{5} b^{5} c^{5}}\right )^{\frac{1}{3}} \log \left ({\left | 3 \, b^{4} - 9 \, a b^{2} c + 3 \,{\left (b^{3} c - 3 \, a b c^{2}\right )} x + 3 \,{\left (b^{3} - 3 \, a b c\right )}{\left (-b^{3} + 3 \, a b c\right )}^{\frac{1}{3}} \right |}\right ) - \frac{c x + b}{3 \,{\left (c^{2} x^{3} + 3 \, b c x^{2} + 3 \, b^{2} x + 3 \, a b\right )}{\left (b^{3} - 3 \, a b c\right )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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