Optimal. Leaf size=212 \[ \frac{3 b d^2 (c+d x) \text{PolyLog}\left (3,-\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{2 f^3 \left (a^2-b^2\right )}+\frac{3 b d (c+d x)^2 \text{PolyLog}\left (2,-\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{2 f^2 \left (a^2-b^2\right )}+\frac{3 b d^3 \text{PolyLog}\left (4,-\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{4 f^4 \left (a^2-b^2\right )}-\frac{b (c+d x)^3 \log \left (\frac{(a-b) e^{-2 (e+f x)}}{a+b}+1\right )}{f \left (a^2-b^2\right )}+\frac{(c+d x)^4}{4 d (a+b)} \]
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Rubi [A] time = 0.340666, antiderivative size = 212, normalized size of antiderivative = 1., number of steps used = 6, number of rules used = 6, integrand size = 20, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.3, Rules used = {3732, 2190, 2531, 6609, 2282, 6589} \[ \frac{3 b d^2 (c+d x) \text{PolyLog}\left (3,-\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{2 f^3 \left (a^2-b^2\right )}+\frac{3 b d (c+d x)^2 \text{PolyLog}\left (2,-\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{2 f^2 \left (a^2-b^2\right )}+\frac{3 b d^3 \text{PolyLog}\left (4,-\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{4 f^4 \left (a^2-b^2\right )}-\frac{b (c+d x)^3 \log \left (\frac{(a-b) e^{-2 (e+f x)}}{a+b}+1\right )}{f \left (a^2-b^2\right )}+\frac{(c+d x)^4}{4 d (a+b)} \]
Antiderivative was successfully verified.
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Rule 3732
Rule 2190
Rule 2531
Rule 6609
Rule 2282
Rule 6589
Rubi steps
\begin{align*} \int \frac{(c+d x)^3}{a+b \tanh (e+f x)} \, dx &=\frac{(c+d x)^4}{4 (a+b) d}+(2 b) \int \frac{e^{-2 (e+f x)} (c+d x)^3}{(a+b)^2+\left (a^2-b^2\right ) e^{-2 (e+f x)}} \, dx\\ &=\frac{(c+d x)^4}{4 (a+b) d}-\frac{b (c+d x)^3 \log \left (1+\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{\left (a^2-b^2\right ) f}+\frac{(3 b d) \int (c+d x)^2 \log \left (1+\frac{\left (a^2-b^2\right ) e^{-2 (e+f x)}}{(a+b)^2}\right ) \, dx}{\left (a^2-b^2\right ) f}\\ &=\frac{(c+d x)^4}{4 (a+b) d}-\frac{b (c+d x)^3 \log \left (1+\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{\left (a^2-b^2\right ) f}+\frac{3 b d (c+d x)^2 \text{Li}_2\left (-\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{2 \left (a^2-b^2\right ) f^2}-\frac{\left (3 b d^2\right ) \int (c+d x) \text{Li}_2\left (-\frac{\left (a^2-b^2\right ) e^{-2 (e+f x)}}{(a+b)^2}\right ) \, dx}{\left (a^2-b^2\right ) f^2}\\ &=\frac{(c+d x)^4}{4 (a+b) d}-\frac{b (c+d x)^3 \log \left (1+\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{\left (a^2-b^2\right ) f}+\frac{3 b d (c+d x)^2 \text{Li}_2\left (-\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{2 \left (a^2-b^2\right ) f^2}+\frac{3 b d^2 (c+d x) \text{Li}_3\left (-\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{2 \left (a^2-b^2\right ) f^3}-\frac{\left (3 b d^3\right ) \int \text{Li}_3\left (-\frac{\left (a^2-b^2\right ) e^{-2 (e+f x)}}{(a+b)^2}\right ) \, dx}{2 \left (a^2-b^2\right ) f^3}\\ &=\frac{(c+d x)^4}{4 (a+b) d}-\frac{b (c+d x)^3 \log \left (1+\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{\left (a^2-b^2\right ) f}+\frac{3 b d (c+d x)^2 \text{Li}_2\left (-\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{2 \left (a^2-b^2\right ) f^2}+\frac{3 b d^2 (c+d x) \text{Li}_3\left (-\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{2 \left (a^2-b^2\right ) f^3}+\frac{\left (3 b d^3\right ) \operatorname{Subst}\left (\int \frac{\text{Li}_3\left (\frac{(-a+b) x}{a+b}\right )}{x} \, dx,x,e^{-2 (e+f x)}\right )}{4 \left (a^2-b^2\right ) f^4}\\ &=\frac{(c+d x)^4}{4 (a+b) d}-\frac{b (c+d x)^3 \log \left (1+\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{\left (a^2-b^2\right ) f}+\frac{3 b d (c+d x)^2 \text{Li}_2\left (-\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{2 \left (a^2-b^2\right ) f^2}+\frac{3 b d^2 (c+d x) \text{Li}_3\left (-\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{2 \left (a^2-b^2\right ) f^3}+\frac{3 b d^3 \text{Li}_4\left (-\frac{(a-b) e^{-2 (e+f x)}}{a+b}\right )}{4 \left (a^2-b^2\right ) f^4}\\ \end{align*}
Mathematica [A] time = 3.41063, size = 239, normalized size = 1.13 \[ \frac{b \left (\frac{3 d \left (2 f^2 (c+d x)^2 \text{PolyLog}\left (2,\frac{(b-a) e^{-2 (e+f x)}}{a+b}\right )+d \left (2 f (c+d x) \text{PolyLog}\left (3,\frac{(b-a) e^{-2 (e+f x)}}{a+b}\right )+d \text{PolyLog}\left (4,\frac{(b-a) e^{-2 (e+f x)}}{a+b}\right )\right )\right )}{f^4 (a-b)}-\frac{4 (c+d x)^3 \log \left (\frac{(a-b) e^{-2 (e+f x)}}{a+b}+1\right )}{f (a-b)}-\frac{2 (c+d x)^4}{d \left (a \left (e^{2 e}+1\right )+b \left (e^{2 e}-1\right )\right )}\right )}{4 (a+b)}+\frac{x \cosh (e) \left (6 c^2 d x+4 c^3+4 c d^2 x^2+d^3 x^3\right )}{4 (a \cosh (e)+b \sinh (e))} \]
Antiderivative was successfully verified.
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Maple [B] time = 0.203, size = 1143, normalized size = 5.4 \begin{align*} \text{result too large to display} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [B] time = 1.68302, size = 713, normalized size = 3.36 \begin{align*} -\frac{3 \,{\left (2 \, f x \log \left (\frac{{\left (a e^{\left (2 \, e\right )} + b e^{\left (2 \, e\right )}\right )} e^{\left (2 \, f x\right )}}{a - b} + 1\right ) +{\rm Li}_2\left (-\frac{{\left (a e^{\left (2 \, e\right )} + b e^{\left (2 \, e\right )}\right )} e^{\left (2 \, f x\right )}}{a - b}\right )\right )} b c^{2} d}{2 \,{\left (a^{2} f^{2} - b^{2} f^{2}\right )}} - \frac{3 \,{\left (2 \, f^{2} x^{2} \log \left (\frac{{\left (a e^{\left (2 \, e\right )} + b e^{\left (2 \, e\right )}\right )} e^{\left (2 \, f x\right )}}{a - b} + 1\right ) + 2 \, f x{\rm Li}_2\left (-\frac{{\left (a e^{\left (2 \, e\right )} + b e^{\left (2 \, e\right )}\right )} e^{\left (2 \, f x\right )}}{a - b}\right ) -{\rm Li}_{3}(-\frac{{\left (a e^{\left (2 \, e\right )} + b e^{\left (2 \, e\right )}\right )} e^{\left (2 \, f x\right )}}{a - b})\right )} b c d^{2}}{2 \,{\left (a^{2} f^{3} - b^{2} f^{3}\right )}} - \frac{{\left (4 \, f^{3} x^{3} \log \left (\frac{{\left (a e^{\left (2 \, e\right )} + b e^{\left (2 \, e\right )}\right )} e^{\left (2 \, f x\right )}}{a - b} + 1\right ) + 6 \, f^{2} x^{2}{\rm Li}_2\left (-\frac{{\left (a e^{\left (2 \, e\right )} + b e^{\left (2 \, e\right )}\right )} e^{\left (2 \, f x\right )}}{a - b}\right ) - 6 \, f x{\rm Li}_{3}(-\frac{{\left (a e^{\left (2 \, e\right )} + b e^{\left (2 \, e\right )}\right )} e^{\left (2 \, f x\right )}}{a - b}) + 3 \,{\rm Li}_{4}(-\frac{{\left (a e^{\left (2 \, e\right )} + b e^{\left (2 \, e\right )}\right )} e^{\left (2 \, f x\right )}}{a - b})\right )} b d^{3}}{3 \,{\left (a^{2} f^{4} - b^{2} f^{4}\right )}} - c^{3}{\left (\frac{b \log \left (-{\left (a - b\right )} e^{\left (-2 \, f x - 2 \, e\right )} - a - b\right )}{{\left (a^{2} - b^{2}\right )} f} - \frac{f x + e}{{\left (a + b\right )} f}\right )} + \frac{b d^{3} f^{4} x^{4} + 4 \, b c d^{2} f^{4} x^{3} + 6 \, b c^{2} d f^{4} x^{2}}{2 \,{\left (a^{2} f^{4} - b^{2} f^{4}\right )}} + \frac{d^{3} x^{4} + 4 \, c d^{2} x^{3} + 6 \, c^{2} d x^{2}}{4 \,{\left (a + b\right )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [C] time = 2.45542, size = 1821, normalized size = 8.59 \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 [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int \frac{\left (c + d x\right )^{3}}{a + b \tanh{\left (e + f x \right )}}\, 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 \frac{{\left (d x + c\right )}^{3}}{b \tanh \left (f x + e\right ) + a}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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