Optimal. Leaf size=16 \[ \frac {\tanh ^{-1}(\coth (a+b x))^2}{2 b} \]
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Rubi [A]
time = 0.00, antiderivative size = 16, normalized size of antiderivative = 1.00, number of steps
used = 2, number of rules used = 2, integrand size = 7, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.286, Rules used = {2188, 30}
\begin {gather*} \frac {\tanh ^{-1}(\coth (a+b x))^2}{2 b} \end {gather*}
Antiderivative was successfully verified.
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Rule 30
Rule 2188
Rubi steps
\begin {align*} \int \tanh ^{-1}(\coth (a+b x)) \, dx &=\frac {\text {Subst}\left (\int x \, dx,x,\tanh ^{-1}(\coth (a+b x))\right )}{b}\\ &=\frac {\tanh ^{-1}(\coth (a+b x))^2}{2 b}\\ \end {align*}
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Mathematica [A]
time = 0.00, size = 18, normalized size = 1.12 \begin {gather*} -\frac {b x^2}{2}+x \tanh ^{-1}(\coth (a+b x)) \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.10, size = 15, normalized size = 0.94
method | result | size |
derivativedivides | \(\frac {\arctanh \left (\coth \left (b x +a \right )\right )^{2}}{2 b}\) | \(15\) |
default | \(\frac {\arctanh \left (\coth \left (b x +a \right )\right )^{2}}{2 b}\) | \(15\) |
risch | \(x \ln \left ({\mathrm e}^{b x +a}\right )-\frac {i \pi x \mathrm {csgn}\left (i {\mathrm e}^{b x +a}\right )^{2} \mathrm {csgn}\left (i {\mathrm e}^{2 b x +2 a}\right )}{4}+\frac {i \pi \,\mathrm {csgn}\left (i {\mathrm e}^{b x +a}\right ) \mathrm {csgn}\left (i {\mathrm e}^{2 b x +2 a}\right )^{2} x}{2}-\frac {i \pi x \mathrm {csgn}\left (i {\mathrm e}^{2 b x +2 a}\right )^{3}}{4}-\frac {i \pi \,\mathrm {csgn}\left (i {\mathrm e}^{2 b x +2 a}\right ) \mathrm {csgn}\left (\frac {i}{{\mathrm e}^{2 b x +2 a}-1}\right ) \mathrm {csgn}\left (\frac {i {\mathrm e}^{2 b x +2 a}}{{\mathrm e}^{2 b x +2 a}-1}\right ) x}{4}+\frac {i \pi \,\mathrm {csgn}\left (i {\mathrm e}^{2 b x +2 a}\right ) \mathrm {csgn}\left (\frac {i {\mathrm e}^{2 b x +2 a}}{{\mathrm e}^{2 b x +2 a}-1}\right )^{2} x}{4}-\frac {i \pi \mathrm {csgn}\left (\frac {i}{{\mathrm e}^{2 b x +2 a}-1}\right )^{3} x}{2}+\frac {i \pi \,\mathrm {csgn}\left (\frac {i}{{\mathrm e}^{2 b x +2 a}-1}\right ) \mathrm {csgn}\left (\frac {i {\mathrm e}^{2 b x +2 a}}{{\mathrm e}^{2 b x +2 a}-1}\right )^{2} x}{4}-\frac {i \pi \mathrm {csgn}\left (\frac {i {\mathrm e}^{2 b x +2 a}}{{\mathrm e}^{2 b x +2 a}-1}\right )^{3} x}{4}-\frac {b \,x^{2}}{2}+\frac {i \pi \mathrm {csgn}\left (\frac {i}{{\mathrm e}^{2 b x +2 a}-1}\right )^{2} x}{2}-\frac {i \pi x}{2}\) | \(340\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [A]
time = 0.30, size = 16, normalized size = 1.00 \begin {gather*} -\frac {1}{2} \, b x^{2} + x \operatorname {artanh}\left (\coth \left (b x + a\right )\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A]
time = 0.51, size = 10, normalized size = 0.62 \begin {gather*} \frac {1}{2} \, b x^{2} + a x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [B] Leaf count of result is larger than twice the leaf count of optimal. 80 vs.
\(2 (12) = 24\).
time = 2.23, size = 80, normalized size = 5.00 \begin {gather*} \begin {cases} - \frac {\log {\left (- e^{- b x} \right )} \operatorname {atanh}{\left (\coth {\left (b x + \log {\left (- e^{- b x} \right )} \right )} \right )}}{b} & \text {for}\: a = \log {\left (- e^{- b x} \right )} \\x \operatorname {atanh}{\left (\coth {\left (b x + \log {\left (e^{- b x} \right )} \right )} \right )} & \text {for}\: a = \log {\left (e^{- b x} \right )} \\x \operatorname {atanh}{\left (\coth {\left (a \right )} \right )} & \text {for}\: b = 0 \\\frac {\operatorname {atanh}^{2}{\left (\frac {1}{\tanh {\left (a + b x \right )}} \right )}}{2 b} & \text {otherwise} \end {cases} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [B] Leaf count of result is larger than twice the leaf count of optimal. 69 vs.
\(2 (14) = 28\).
time = 0.40, size = 69, normalized size = 4.31 \begin {gather*} -\frac {1}{2} \, b x^{2} + \frac {1}{2} \, x \log \left (-\frac {\frac {e^{\left (2 \, b x + 2 \, a\right )} + 1}{e^{\left (2 \, b x + 2 \, a\right )} - 1} + 1}{\frac {e^{\left (2 \, b x + 2 \, a\right )} + 1}{e^{\left (2 \, b x + 2 \, a\right )} - 1} - 1}\right ) \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 0.02, size = 16, normalized size = 1.00 \begin {gather*} x\,\mathrm {atanh}\left (\mathrm {coth}\left (a+b\,x\right )\right )-\frac {b\,x^2}{2} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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