Optimal. Leaf size=154 \[ \frac{(e+f x)^3 \left (a+b \cot ^{-1}(c+d x)\right )}{3 f}+\frac{b \left (-\left (1-3 c^2\right ) f^2-6 c d e f+3 d^2 e^2\right ) \log \left ((c+d x)^2+1\right )}{6 d^3}+\frac{b (d e-c f) \left (-\left (3-c^2\right ) f^2-2 c d e f+d^2 e^2\right ) \tan ^{-1}(c+d x)}{3 d^3 f}+\frac{b f x (d e-c f)}{d^2}+\frac{b f^2 (c+d x)^2}{6 d^3} \]
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Rubi [A] time = 0.185669, antiderivative size = 154, normalized size of antiderivative = 1., number of steps used = 7, number of rules used = 6, integrand size = 18, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.333, Rules used = {5048, 4863, 702, 635, 203, 260} \[ \frac{(e+f x)^3 \left (a+b \cot ^{-1}(c+d x)\right )}{3 f}+\frac{b \left (-\left (1-3 c^2\right ) f^2-6 c d e f+3 d^2 e^2\right ) \log \left ((c+d x)^2+1\right )}{6 d^3}+\frac{b (d e-c f) \left (-\left (3-c^2\right ) f^2-2 c d e f+d^2 e^2\right ) \tan ^{-1}(c+d x)}{3 d^3 f}+\frac{b f x (d e-c f)}{d^2}+\frac{b f^2 (c+d x)^2}{6 d^3} \]
Antiderivative was successfully verified.
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Rule 5048
Rule 4863
Rule 702
Rule 635
Rule 203
Rule 260
Rubi steps
\begin{align*} \int (e+f x)^2 \left (a+b \cot ^{-1}(c+d x)\right ) \, dx &=\frac{\operatorname{Subst}\left (\int \left (\frac{d e-c f}{d}+\frac{f x}{d}\right )^2 \left (a+b \cot ^{-1}(x)\right ) \, dx,x,c+d x\right )}{d}\\ &=\frac{(e+f x)^3 \left (a+b \cot ^{-1}(c+d x)\right )}{3 f}+\frac{b \operatorname{Subst}\left (\int \frac{\left (\frac{d e-c f}{d}+\frac{f x}{d}\right )^3}{1+x^2} \, dx,x,c+d x\right )}{3 f}\\ &=\frac{(e+f x)^3 \left (a+b \cot ^{-1}(c+d x)\right )}{3 f}+\frac{b \operatorname{Subst}\left (\int \left (\frac{3 f^2 (d e-c f)}{d^3}+\frac{f^3 x}{d^3}+\frac{(d e-c f) \left (d^2 e^2-2 c d e f-3 f^2+c^2 f^2\right )+f \left (3 d^2 e^2-6 c d e f-\left (1-3 c^2\right ) f^2\right ) x}{d^3 \left (1+x^2\right )}\right ) \, dx,x,c+d x\right )}{3 f}\\ &=\frac{b f (d e-c f) x}{d^2}+\frac{b f^2 (c+d x)^2}{6 d^3}+\frac{(e+f x)^3 \left (a+b \cot ^{-1}(c+d x)\right )}{3 f}+\frac{b \operatorname{Subst}\left (\int \frac{(d e-c f) \left (d^2 e^2-2 c d e f-3 f^2+c^2 f^2\right )+f \left (3 d^2 e^2-6 c d e f-\left (1-3 c^2\right ) f^2\right ) x}{1+x^2} \, dx,x,c+d x\right )}{3 d^3 f}\\ &=\frac{b f (d e-c f) x}{d^2}+\frac{b f^2 (c+d x)^2}{6 d^3}+\frac{(e+f x)^3 \left (a+b \cot ^{-1}(c+d x)\right )}{3 f}+\frac{\left (b \left (3 d^2 e^2-6 c d e f-\left (1-3 c^2\right ) f^2\right )\right ) \operatorname{Subst}\left (\int \frac{x}{1+x^2} \, dx,x,c+d x\right )}{3 d^3}+\frac{\left (b (d e-c f) \left (d^2 e^2-2 c d e f-\left (3-c^2\right ) f^2\right )\right ) \operatorname{Subst}\left (\int \frac{1}{1+x^2} \, dx,x,c+d x\right )}{3 d^3 f}\\ &=\frac{b f (d e-c f) x}{d^2}+\frac{b f^2 (c+d x)^2}{6 d^3}+\frac{(e+f x)^3 \left (a+b \cot ^{-1}(c+d x)\right )}{3 f}+\frac{b (d e-c f) \left (d^2 e^2-2 c d e f-\left (3-c^2\right ) f^2\right ) \tan ^{-1}(c+d x)}{3 d^3 f}+\frac{b \left (3 d^2 e^2-6 c d e f-\left (1-3 c^2\right ) f^2\right ) \log \left (1+(c+d x)^2\right )}{6 d^3}\\ \end{align*}
Mathematica [C] time = 0.145346, size = 118, normalized size = 0.77 \[ \frac{(e+f x)^3 \left (a+b \cot ^{-1}(c+d x)\right )+\frac{b \left (6 d f^2 x (d e-c f)-i (d e-(c-i) f)^3 \log (-c-d x+i)+i (d e-(c+i) f)^3 \log (c+d x+i)+f^3 (c+d x)^2\right )}{2 d^3}}{3 f} \]
Antiderivative was successfully verified.
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Maple [B] time = 0.048, size = 312, normalized size = 2. \begin{align*}{\frac{bf\arctan \left ( dx+c \right ){c}^{2}e}{{d}^{2}}}-{\frac{bf\ln \left ( 1+ \left ( dx+c \right ) ^{2} \right ) ce}{{d}^{2}}}-{\frac{b\arctan \left ( dx+c \right ) c{e}^{2}}{d}}-{\frac{b{f}^{2}\ln \left ( 1+ \left ( dx+c \right ) ^{2} \right ) }{6\,{d}^{3}}}-{\frac{5\,b{f}^{2}{c}^{2}}{6\,{d}^{3}}}+{\rm arccot} \left (dx+c\right )xb{e}^{2}+{\frac{b{f}^{2}{\rm arccot} \left (dx+c\right ){x}^{3}}{3}}-{\frac{bf\arctan \left ( dx+c \right ) e}{{d}^{2}}}+{\frac{b{f}^{2}\arctan \left ( dx+c \right ) c}{{d}^{3}}}+{\frac{b\ln \left ( 1+ \left ( dx+c \right ) ^{2} \right ){e}^{2}}{2\,d}}-{\frac{b{f}^{2}\arctan \left ( dx+c \right ){c}^{3}}{3\,{d}^{3}}}+{\frac{b\arctan \left ( dx+c \right ){e}^{3}}{3\,f}}+{\frac{b{f}^{2}\ln \left ( 1+ \left ( dx+c \right ) ^{2} \right ){c}^{2}}{2\,{d}^{3}}}+{\frac{bfex}{d}}-{\frac{2\,b{f}^{2}cx}{3\,{d}^{2}}}+{\frac{b{\rm arccot} \left (dx+c\right ){e}^{3}}{3\,f}}+af{x}^{2}e+ax{e}^{2}+{\frac{bfce}{{d}^{2}}}+{\frac{b{f}^{2}{x}^{2}}{6\,d}}+{\frac{a{f}^{2}{x}^{3}}{3}}+{\frac{a{e}^{3}}{3\,f}}+bf{\rm arccot} \left (dx+c\right )e{x}^{2} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 1.49671, size = 292, normalized size = 1.9 \begin{align*} \frac{1}{3} \, a f^{2} x^{3} + a e f x^{2} +{\left (x^{2} \operatorname{arccot}\left (d x + c\right ) + d{\left (\frac{x}{d^{2}} + \frac{{\left (c^{2} - 1\right )} \arctan \left (\frac{d^{2} x + c d}{d}\right )}{d^{3}} - \frac{c \log \left (d^{2} x^{2} + 2 \, c d x + c^{2} + 1\right )}{d^{3}}\right )}\right )} b e f + \frac{1}{6} \,{\left (2 \, x^{3} \operatorname{arccot}\left (d x + c\right ) + d{\left (\frac{d x^{2} - 4 \, c x}{d^{3}} - \frac{2 \,{\left (c^{3} - 3 \, c\right )} \arctan \left (\frac{d^{2} x + c d}{d}\right )}{d^{4}} + \frac{{\left (3 \, c^{2} - 1\right )} \log \left (d^{2} x^{2} + 2 \, c d x + c^{2} + 1\right )}{d^{4}}\right )}\right )} b f^{2} + a e^{2} x + \frac{{\left (2 \,{\left (d x + c\right )} \operatorname{arccot}\left (d x + c\right ) + \log \left ({\left (d x + c\right )}^{2} + 1\right )\right )} b e^{2}}{2 \, d} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 2.38821, size = 459, normalized size = 2.98 \begin{align*} \frac{2 \, a d^{3} f^{2} x^{3} +{\left (6 \, a d^{3} e f + b d^{2} f^{2}\right )} x^{2} + 2 \,{\left (3 \, a d^{3} e^{2} + 3 \, b d^{2} e f - 2 \, b c d f^{2}\right )} x + 2 \,{\left (b d^{3} f^{2} x^{3} + 3 \, b d^{3} e f x^{2} + 3 \, b d^{3} e^{2} x\right )} \operatorname{arccot}\left (d x + c\right ) - 2 \,{\left (3 \, b c d^{2} e^{2} - 3 \,{\left (b c^{2} - b\right )} d e f +{\left (b c^{3} - 3 \, b c\right )} f^{2}\right )} \arctan \left (d x + c\right ) +{\left (3 \, b d^{2} e^{2} - 6 \, b c d e f +{\left (3 \, b c^{2} - b\right )} f^{2}\right )} \log \left (d^{2} x^{2} + 2 \, c d x + c^{2} + 1\right )}{6 \, d^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 4.35104, size = 357, normalized size = 2.32 \begin{align*} \begin{cases} a e^{2} x + a e f x^{2} + \frac{a f^{2} x^{3}}{3} + \frac{b c^{3} f^{2} \operatorname{acot}{\left (c + d x \right )}}{3 d^{3}} - \frac{b c^{2} e f \operatorname{acot}{\left (c + d x \right )}}{d^{2}} + \frac{b c^{2} f^{2} \log{\left (\frac{c^{2}}{d^{2}} + \frac{2 c x}{d} + x^{2} + \frac{1}{d^{2}} \right )}}{2 d^{3}} + \frac{b c e^{2} \operatorname{acot}{\left (c + d x \right )}}{d} - \frac{b c e f \log{\left (\frac{c^{2}}{d^{2}} + \frac{2 c x}{d} + x^{2} + \frac{1}{d^{2}} \right )}}{d^{2}} - \frac{2 b c f^{2} x}{3 d^{2}} - \frac{b c f^{2} \operatorname{acot}{\left (c + d x \right )}}{d^{3}} + b e^{2} x \operatorname{acot}{\left (c + d x \right )} + b e f x^{2} \operatorname{acot}{\left (c + d x \right )} + \frac{b f^{2} x^{3} \operatorname{acot}{\left (c + d x \right )}}{3} + \frac{b e^{2} \log{\left (\frac{c^{2}}{d^{2}} + \frac{2 c x}{d} + x^{2} + \frac{1}{d^{2}} \right )}}{2 d} + \frac{b e f x}{d} + \frac{b f^{2} x^{2}}{6 d} + \frac{b e f \operatorname{acot}{\left (c + d x \right )}}{d^{2}} - \frac{b f^{2} \log{\left (\frac{c^{2}}{d^{2}} + \frac{2 c x}{d} + x^{2} + \frac{1}{d^{2}} \right )}}{6 d^{3}} & \text{for}\: d \neq 0 \\\left (a + b \operatorname{acot}{\left (c \right )}\right ) \left (e^{2} x + e f x^{2} + \frac{f^{2} x^{3}}{3}\right ) & \text{otherwise} \end{cases} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [B] time = 1.4938, size = 641, normalized size = 4.16 \begin{align*} \frac{2 \, \pi b d^{3} f^{2} x^{3} \left \lfloor \frac{\pi \mathrm{sgn}\left (d x + c\right ) - 2 \, \arctan \left (\frac{1}{d x + c}\right )}{2 \, \pi } \right \rfloor - \pi b d^{3} f^{2} x^{3} \mathrm{sgn}\left (d x + c\right ) + \pi b d^{3} f^{2} x^{3} + 2 \, b d^{3} f^{2} x^{3} \arctan \left (\frac{1}{d x + c}\right ) + 2 \, a d^{3} f^{2} x^{3} + 6 \, b d^{3} f x^{2} \arctan \left (\frac{1}{d x + c}\right ) e + 6 \, a d^{3} f x^{2} e - \pi b c^{3} f^{2} \mathrm{sgn}\left (d x + c\right ) + 3 \, \pi b c^{2} d f e \mathrm{sgn}\left (d x + c\right ) + \pi b c^{3} f^{2} + b d^{2} f^{2} x^{2} + 2 \, b c^{3} f^{2} \arctan \left (\frac{1}{d x + c}\right ) + 6 \, b d^{3} x \arctan \left (\frac{1}{d x + c}\right ) e^{2} - 3 \, \pi b c^{2} d f e - 6 \, b c^{2} d f \arctan \left (\frac{1}{d x + c}\right ) e - 4 \, b c d f^{2} x + 6 \, a d^{3} x e^{2} - 6 \, b c d^{2} \arctan \left (d x + c\right ) e^{2} + 6 \, b d^{2} f x e + 3 \, b c^{2} f^{2} \log \left (d^{2} x^{2} + 2 \, c d x + c^{2} + 1\right ) - 6 \, b c d f e \log \left (d^{2} x^{2} + 2 \, c d x + c^{2} + 1\right ) + 3 \, \pi b c f^{2} \mathrm{sgn}\left (d x + c\right ) - 3 \, \pi b d f e \mathrm{sgn}\left (d x + c\right ) - 3 \, \pi b c f^{2} - 6 \, b c f^{2} \arctan \left (\frac{1}{d x + c}\right ) + 3 \, \pi b d f e + 6 \, b d f \arctan \left (\frac{1}{d x + c}\right ) e + 3 \, b d^{2} e^{2} \log \left (d^{2} x^{2} + 2 \, c d x + c^{2} + 1\right ) - b f^{2} \log \left (d^{2} x^{2} + 2 \, c d x + c^{2} + 1\right )}{6 \, d^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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