Optimal. Leaf size=76 \[ -\frac{\text{PolyLog}\left (2,-(1-d) e^{2 a+2 b x}\right )}{4 b}-\frac{1}{2} x \log \left ((1-d) e^{2 a+2 b x}+1\right )+x \tanh ^{-1}(d (-\tanh (a+b x))-d+1)+\frac{b x^2}{2} \]
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Rubi [A] time = 0.138354, antiderivative size = 76, normalized size of antiderivative = 1., number of steps used = 5, number of rules used = 5, integrand size = 15, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.333, Rules used = {6231, 2184, 2190, 2279, 2391} \[ -\frac{\text{PolyLog}\left (2,-(1-d) e^{2 a+2 b x}\right )}{4 b}-\frac{1}{2} x \log \left ((1-d) e^{2 a+2 b x}+1\right )+x \tanh ^{-1}(d (-\tanh (a+b x))-d+1)+\frac{b x^2}{2} \]
Antiderivative was successfully verified.
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Rule 6231
Rule 2184
Rule 2190
Rule 2279
Rule 2391
Rubi steps
\begin{align*} \int \tanh ^{-1}(1-d-d \tanh (a+b x)) \, dx &=x \tanh ^{-1}(1-d-d \tanh (a+b x))+b \int \frac{x}{1+(1-d) e^{2 a+2 b x}} \, dx\\ &=\frac{b x^2}{2}+x \tanh ^{-1}(1-d-d \tanh (a+b x))-(b (1-d)) \int \frac{e^{2 a+2 b x} x}{1+(1-d) e^{2 a+2 b x}} \, dx\\ &=\frac{b x^2}{2}+x \tanh ^{-1}(1-d-d \tanh (a+b x))-\frac{1}{2} x \log \left (1+(1-d) e^{2 a+2 b x}\right )+\frac{1}{2} \int \log \left (1+(1-d) e^{2 a+2 b x}\right ) \, dx\\ &=\frac{b x^2}{2}+x \tanh ^{-1}(1-d-d \tanh (a+b x))-\frac{1}{2} x \log \left (1+(1-d) e^{2 a+2 b x}\right )+\frac{\operatorname{Subst}\left (\int \frac{\log (1+(1-d) x)}{x} \, dx,x,e^{2 a+2 b x}\right )}{4 b}\\ &=\frac{b x^2}{2}+x \tanh ^{-1}(1-d-d \tanh (a+b x))-\frac{1}{2} x \log \left (1+(1-d) e^{2 a+2 b x}\right )-\frac{\text{Li}_2\left (-(1-d) e^{2 a+2 b x}\right )}{4 b}\\ \end{align*}
Mathematica [B] time = 4.27504, size = 200, normalized size = 2.63 \[ \frac{-2 \text{PolyLog}\left (2,-\sqrt{d-1} e^{a+b x}\right )-2 \text{PolyLog}\left (2,\sqrt{d-1} e^{a+b x}\right )-2 \log \left (e^{a+b x}\right ) \log \left (1-\sqrt{d-1} e^{a+b x}\right )-2 \log \left (e^{a+b x}\right ) \log \left (\sqrt{d-1} e^{a+b x}+1\right )+2 \log \left (e^{a+b x}\right ) \log \left (e^{-a-b x} \left ((d-1) e^{2 (a+b x)}-1\right )\right )-2 b x \log (d \sinh (a+b x)+(d-2) \cosh (a+b x))+\log ^2\left (e^{a+b x}\right )+b^2 x^2}{4 b}+x \tanh ^{-1}(d (-\tanh (a+b x))-d+1) \]
Warning: Unable to verify antiderivative.
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Maple [B] time = 0.147, size = 280, normalized size = 3.7 \begin{align*}{\frac{{\it Artanh} \left ( -1+d+d\tanh \left ( bx+a \right ) \right ) \ln \left ( d\tanh \left ( bx+a \right ) -d \right ) }{2\,b}}-{\frac{{\it Artanh} \left ( -1+d+d\tanh \left ( bx+a \right ) \right ) \ln \left ( d\tanh \left ( bx+a \right ) +d \right ) }{2\,b}}+{\frac{1}{4\,b}\ln \left ( -{\frac{d\tanh \left ( bx+a \right ) }{2}}-{\frac{d}{2}}+1 \right ) \ln \left ({\frac{d\tanh \left ( bx+a \right ) }{2}}+{\frac{d}{2}} \right ) }-{\frac{\ln \left ( d\tanh \left ( bx+a \right ) +d \right ) }{4\,b}\ln \left ( -{\frac{d\tanh \left ( bx+a \right ) }{2}}-{\frac{d}{2}}+1 \right ) }+{\frac{1}{4\,b}{\it dilog} \left ({\frac{d\tanh \left ( bx+a \right ) }{2}}+{\frac{d}{2}} \right ) }+{\frac{ \left ( \ln \left ( d\tanh \left ( bx+a \right ) +d \right ) \right ) ^{2}}{8\,b}}-{\frac{1}{4\,b}{\it dilog} \left ({\frac{d\tanh \left ( bx+a \right ) +d}{2\,d}} \right ) }-{\frac{\ln \left ( d\tanh \left ( bx+a \right ) -d \right ) }{4\,b}\ln \left ({\frac{d\tanh \left ( bx+a \right ) +d}{2\,d}} \right ) }+{\frac{1}{4\,b}{\it dilog} \left ({\frac{d\tanh \left ( bx+a \right ) +d-2}{2\,d-2}} \right ) }+{\frac{\ln \left ( d\tanh \left ( bx+a \right ) -d \right ) }{4\,b}\ln \left ({\frac{d\tanh \left ( bx+a \right ) +d-2}{2\,d-2}} \right ) } \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A] time = 3.28686, size = 99, normalized size = 1.3 \begin{align*} \frac{1}{4} \, b d{\left (\frac{2 \, x^{2}}{d} - \frac{2 \, b x \log \left (-{\left (d - 1\right )} e^{\left (2 \, b x + 2 \, a\right )} + 1\right ) +{\rm Li}_2\left ({\left (d - 1\right )} e^{\left (2 \, b x + 2 \, a\right )}\right )}{b^{2} d}\right )} - x \operatorname{artanh}\left (d \tanh \left (b x + a\right ) + d - 1\right ) \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] time = 1.96903, size = 668, normalized size = 8.79 \begin{align*} \frac{b^{2} x^{2} - b x \log \left (-\frac{d \cosh \left (b x + a\right ) + d \sinh \left (b x + a\right )}{{\left (d - 2\right )} \cosh \left (b x + a\right ) + d \sinh \left (b x + a\right )}\right ) + a \log \left (2 \,{\left (d - 1\right )} \cosh \left (b x + a\right ) + 2 \,{\left (d - 1\right )} \sinh \left (b x + a\right ) + 2 \, \sqrt{d - 1}\right ) + a \log \left (2 \,{\left (d - 1\right )} \cosh \left (b x + a\right ) + 2 \,{\left (d - 1\right )} \sinh \left (b x + a\right ) - 2 \, \sqrt{d - 1}\right ) -{\left (b x + a\right )} \log \left (\sqrt{d - 1}{\left (\cosh \left (b x + a\right ) + \sinh \left (b x + a\right )\right )} + 1\right ) -{\left (b x + a\right )} \log \left (-\sqrt{d - 1}{\left (\cosh \left (b x + a\right ) + \sinh \left (b x + a\right )\right )} + 1\right ) -{\rm Li}_2\left (\sqrt{d - 1}{\left (\cosh \left (b x + a\right ) + \sinh \left (b x + a\right )\right )}\right ) -{\rm Li}_2\left (-\sqrt{d - 1}{\left (\cosh \left (b x + a\right ) + \sinh \left (b x + a\right )\right )}\right )}{2 \, b} \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 \operatorname{atanh}{\left (d \tanh{\left (a + b x \right )} + d - 1 \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 -\operatorname{artanh}\left (d \tanh \left (b x + a\right ) + d - 1\right )\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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