Optimal. Leaf size=43 \[ -\frac{b (2 a+b) \tanh (c+d x)}{d}+x (a+b)^2-\frac{b^2 \tanh ^3(c+d x)}{3 d} \]
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Rubi [A] time = 0.0314103, antiderivative size = 43, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 3, integrand size = 14, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.214, Rules used = {3661, 390, 206} \[ -\frac{b (2 a+b) \tanh (c+d x)}{d}+x (a+b)^2-\frac{b^2 \tanh ^3(c+d x)}{3 d} \]
Antiderivative was successfully verified.
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Rule 3661
Rule 390
Rule 206
Rubi steps
\begin{align*} \int \left (a+b \tanh ^2(c+d x)\right )^2 \, dx &=\frac{\operatorname{Subst}\left (\int \frac{\left (a+b x^2\right )^2}{1-x^2} \, dx,x,\tanh (c+d x)\right )}{d}\\ &=\frac{\operatorname{Subst}\left (\int \left (-b (2 a+b)-b^2 x^2+\frac{(a+b)^2}{1-x^2}\right ) \, dx,x,\tanh (c+d x)\right )}{d}\\ &=-\frac{b (2 a+b) \tanh (c+d x)}{d}-\frac{b^2 \tanh ^3(c+d x)}{3 d}+\frac{(a+b)^2 \operatorname{Subst}\left (\int \frac{1}{1-x^2} \, dx,x,\tanh (c+d x)\right )}{d}\\ &=(a+b)^2 x-\frac{b (2 a+b) \tanh (c+d x)}{d}-\frac{b^2 \tanh ^3(c+d x)}{3 d}\\ \end{align*}
Mathematica [A] time = 0.706642, size = 65, normalized size = 1.51 \[ \frac{\tanh (c+d x) \left (\frac{3 (a+b)^2 \tanh ^{-1}\left (\sqrt{\tanh ^2(c+d x)}\right )}{\sqrt{\tanh ^2(c+d x)}}-b \left (6 a+b \left (\tanh ^2(c+d x)+3\right )\right )\right )}{3 d} \]
Antiderivative was successfully verified.
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Maple [B] time = 0.006, size = 144, normalized size = 3.4 \begin{align*} -{\frac{{b}^{2} \left ( \tanh \left ( dx+c \right ) \right ) ^{3}}{3\,d}}-2\,{\frac{ab\tanh \left ( dx+c \right ) }{d}}-{\frac{{b}^{2}\tanh \left ( dx+c \right ) }{d}}-{\frac{{a}^{2}\ln \left ( \tanh \left ( dx+c \right ) -1 \right ) }{2\,d}}-{\frac{\ln \left ( \tanh \left ( dx+c \right ) -1 \right ) ab}{d}}-{\frac{\ln \left ( \tanh \left ( dx+c \right ) -1 \right ){b}^{2}}{2\,d}}+{\frac{\ln \left ( \tanh \left ( dx+c \right ) +1 \right ){a}^{2}}{2\,d}}+{\frac{\ln \left ( \tanh \left ( dx+c \right ) +1 \right ) ab}{d}}+{\frac{\ln \left ( \tanh \left ( dx+c \right ) +1 \right ){b}^{2}}{2\,d}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [B] time = 1.05768, size = 154, normalized size = 3.58 \begin{align*} \frac{1}{3} \, b^{2}{\left (3 \, x + \frac{3 \, c}{d} - \frac{4 \,{\left (3 \, e^{\left (-2 \, d x - 2 \, c\right )} + 3 \, e^{\left (-4 \, d x - 4 \, c\right )} + 2\right )}}{d{\left (3 \, e^{\left (-2 \, d x - 2 \, c\right )} + 3 \, e^{\left (-4 \, d x - 4 \, c\right )} + e^{\left (-6 \, d x - 6 \, c\right )} + 1\right )}}\right )} + 2 \, a b{\left (x + \frac{c}{d} - \frac{2}{d{\left (e^{\left (-2 \, d x - 2 \, c\right )} + 1\right )}}\right )} + a^{2} x \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] time = 1.84934, size = 509, normalized size = 11.84 \begin{align*} \frac{{\left (3 \,{\left (a^{2} + 2 \, a b + b^{2}\right )} d x + 6 \, a b + 4 \, b^{2}\right )} \cosh \left (d x + c\right )^{3} + 3 \,{\left (3 \,{\left (a^{2} + 2 \, a b + b^{2}\right )} d x + 6 \, a b + 4 \, b^{2}\right )} \cosh \left (d x + c\right ) \sinh \left (d x + c\right )^{2} - 2 \,{\left (3 \, a b + 2 \, b^{2}\right )} \sinh \left (d x + c\right )^{3} + 3 \,{\left (3 \,{\left (a^{2} + 2 \, a b + b^{2}\right )} d x + 6 \, a b + 4 \, b^{2}\right )} \cosh \left (d x + c\right ) - 6 \,{\left ({\left (3 \, a b + 2 \, b^{2}\right )} \cosh \left (d x + c\right )^{2} + a b\right )} \sinh \left (d x + c\right )}{3 \,{\left (d \cosh \left (d x + c\right )^{3} + 3 \, d \cosh \left (d x + c\right ) \sinh \left (d x + c\right )^{2} + 3 \, d \cosh \left (d x + c\right )\right )}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [A] time = 0.419502, size = 68, normalized size = 1.58 \begin{align*} \begin{cases} a^{2} x + 2 a b x - \frac{2 a b \tanh{\left (c + d x \right )}}{d} + b^{2} x - \frac{b^{2} \tanh ^{3}{\left (c + d x \right )}}{3 d} - \frac{b^{2} \tanh{\left (c + d x \right )}}{d} & \text{for}\: d \neq 0 \\x \left (a + b \tanh ^{2}{\left (c \right )}\right )^{2} & \text{otherwise} \end{cases} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [B] time = 1.19123, size = 139, normalized size = 3.23 \begin{align*} \frac{{\left (a^{2} + 2 \, a b + b^{2}\right )}{\left (d x + c\right )}}{d} + \frac{4 \,{\left (3 \, a b e^{\left (4 \, d x + 4 \, c\right )} + 3 \, b^{2} e^{\left (4 \, d x + 4 \, c\right )} + 6 \, a b e^{\left (2 \, d x + 2 \, c\right )} + 3 \, b^{2} e^{\left (2 \, d x + 2 \, c\right )} + 3 \, a b + 2 \, b^{2}\right )}}{3 \, d{\left (e^{\left (2 \, d x + 2 \, c\right )} + 1\right )}^{3}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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