Optimal. Leaf size=76 \[ \frac {b x^2}{2}+x \tanh ^{-1}(1-d-d \tanh (a+b x))-\frac {1}{2} x \log \left (1+(1-d) e^{2 a+2 b x}\right )-\frac {\text {PolyLog}\left (2,-\left ((1-d) e^{2 a+2 b x}\right )\right )}{4 b} \]
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Rubi [A]
time = 0.10, antiderivative size = 76, normalized size of antiderivative = 1.00, 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 = {6366, 2215,
2221, 2317, 2438} \begin {gather*} -\frac {\text {Li}_2\left (-\left ((1-d) e^{2 a+2 b x}\right )\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} \end {gather*}
Antiderivative was successfully verified.
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Rule 2215
Rule 2221
Rule 2317
Rule 2438
Rule 6366
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 {\text {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*}
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Mathematica [B] Leaf count is larger than twice the leaf count of optimal. \(200\) vs. \(2(76)=152\).
time = 3.49, size = 200, normalized size = 2.63 \begin {gather*} x \tanh ^{-1}(1-d-d \tanh (a+b x))+\frac {b^2 x^2+\log ^2\left (e^{a+b x}\right )-2 \log \left (e^{a+b x}\right ) \log \left (1-\sqrt {-1+d} e^{a+b x}\right )-2 \log \left (e^{a+b x}\right ) \log \left (1+\sqrt {-1+d} e^{a+b x}\right )+2 \log \left (e^{a+b x}\right ) \log \left (e^{-a-b x} \left (-1+(-1+d) e^{2 (a+b x)}\right )\right )-2 b x \log ((-2+d) \cosh (a+b x)+d \sinh (a+b x))-2 \text {PolyLog}\left (2,-\sqrt {-1+d} e^{a+b x}\right )-2 \text {PolyLog}\left (2,\sqrt {-1+d} e^{a+b x}\right )}{4 b} \end {gather*}
Antiderivative was successfully verified.
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Maple [B] Leaf count of result is larger than twice the leaf count of optimal. \(298\) vs.
\(2(66)=132\).
time = 0.51, size = 299, normalized size = 3.93
method | result | size |
derivativedivides | \(-\frac {\frac {\arctanh \left (-1+d +d \tanh \left (b x +a \right )\right ) d \ln \left (d \tanh \left (b x +a \right )+d \right )}{2}-\frac {\arctanh \left (-1+d +d \tanh \left (b x +a \right )\right ) d \ln \left (-d \tanh \left (b x +a \right )+d \right )}{2}-\frac {d^{2} \left (\frac {\dilog \left (\frac {-d \tanh \left (b x +a \right )-d +2}{-2 d +2}\right )}{2 d}+\frac {\ln \left (-d \tanh \left (b x +a \right )+d \right ) \ln \left (\frac {-d \tanh \left (b x +a \right )-d +2}{-2 d +2}\right )}{2 d}-\frac {\dilog \left (-\frac {-d \tanh \left (b x +a \right )-d}{2 d}\right )}{2 d}-\frac {\ln \left (-d \tanh \left (b x +a \right )+d \right ) \ln \left (-\frac {-d \tanh \left (b x +a \right )-d}{2 d}\right )}{2 d}+\frac {\ln \left (d \tanh \left (b x +a \right )+d \right )^{2}}{4 d}+\frac {\ln \left (-\frac {d \tanh \left (b x +a \right )}{2}-\frac {d}{2}+1\right ) \ln \left (\frac {d \tanh \left (b x +a \right )}{2}+\frac {d}{2}\right )}{2 d}-\frac {\ln \left (-\frac {d \tanh \left (b x +a \right )}{2}-\frac {d}{2}+1\right ) \ln \left (d \tanh \left (b x +a \right )+d \right )}{2 d}+\frac {\dilog \left (\frac {d \tanh \left (b x +a \right )}{2}+\frac {d}{2}\right )}{2 d}\right )}{2}}{b d}\) | \(299\) |
default | \(-\frac {\frac {\arctanh \left (-1+d +d \tanh \left (b x +a \right )\right ) d \ln \left (d \tanh \left (b x +a \right )+d \right )}{2}-\frac {\arctanh \left (-1+d +d \tanh \left (b x +a \right )\right ) d \ln \left (-d \tanh \left (b x +a \right )+d \right )}{2}-\frac {d^{2} \left (\frac {\dilog \left (\frac {-d \tanh \left (b x +a \right )-d +2}{-2 d +2}\right )}{2 d}+\frac {\ln \left (-d \tanh \left (b x +a \right )+d \right ) \ln \left (\frac {-d \tanh \left (b x +a \right )-d +2}{-2 d +2}\right )}{2 d}-\frac {\dilog \left (-\frac {-d \tanh \left (b x +a \right )-d}{2 d}\right )}{2 d}-\frac {\ln \left (-d \tanh \left (b x +a \right )+d \right ) \ln \left (-\frac {-d \tanh \left (b x +a \right )-d}{2 d}\right )}{2 d}+\frac {\ln \left (d \tanh \left (b x +a \right )+d \right )^{2}}{4 d}+\frac {\ln \left (-\frac {d \tanh \left (b x +a \right )}{2}-\frac {d}{2}+1\right ) \ln \left (\frac {d \tanh \left (b x +a \right )}{2}+\frac {d}{2}\right )}{2 d}-\frac {\ln \left (-\frac {d \tanh \left (b x +a \right )}{2}-\frac {d}{2}+1\right ) \ln \left (d \tanh \left (b x +a \right )+d \right )}{2 d}+\frac {\dilog \left (\frac {d \tanh \left (b x +a \right )}{2}+\frac {d}{2}\right )}{2 d}\right )}{2}}{b d}\) | \(299\) |
risch | \(\text {Expression too large to display}\) | \(1095\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.71, size = 73, normalized size = 0.96 \begin {gather*} \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 {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] Leaf count of result is larger than twice the leaf count of optimal. 228 vs.
\(2 (61) = 122\).
time = 0.39, size = 228, normalized size = 3.00 \begin {gather*} \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 {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} - \int \operatorname {atanh}{\left (d \tanh {\left (a + b x \right )} + d - 1 \right )}\, dx \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {could not integrate} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [F]
time = 0.00, size = -1, normalized size = -0.01 \begin {gather*} \int -\mathrm {atanh}\left (d+d\,\mathrm {tanh}\left (a+b\,x\right )-1\right ) \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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