Optimal. Leaf size=114 \[ -\frac {b^2 x}{a \left (a^2-b^2\right )}+\frac {a x}{a^2-b^2}-\frac {a \coth (x)}{a^2-b^2}+\frac {b \text {csch}(x)}{a^2-b^2}+\frac {2 b^3 \tan ^{-1}\left (\frac {\sqrt {a-b} \tanh \left (\frac {x}{2}\right )}{\sqrt {a+b}}\right )}{a (a-b)^{3/2} (a+b)^{3/2}} \]
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Rubi [A] time = 0.20, antiderivative size = 114, normalized size of antiderivative = 1.00, number of steps used = 9, number of rules used = 8, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.615, Rules used = {3898, 2902, 2606, 8, 3473, 2735, 2659, 205} \[ -\frac {b^2 x}{a \left (a^2-b^2\right )}+\frac {a x}{a^2-b^2}-\frac {a \coth (x)}{a^2-b^2}+\frac {b \text {csch}(x)}{a^2-b^2}+\frac {2 b^3 \tan ^{-1}\left (\frac {\sqrt {a-b} \tanh \left (\frac {x}{2}\right )}{\sqrt {a+b}}\right )}{a (a-b)^{3/2} (a+b)^{3/2}} \]
Antiderivative was successfully verified.
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Rule 8
Rule 205
Rule 2606
Rule 2659
Rule 2735
Rule 2902
Rule 3473
Rule 3898
Rubi steps
\begin {align*} \int \frac {\coth ^2(x)}{a+b \text {sech}(x)} \, dx &=\int \frac {\cosh (x) \coth ^2(x)}{b+a \cosh (x)} \, dx\\ &=\frac {a \int \coth ^2(x) \, dx}{a^2-b^2}-\frac {b \int \coth (x) \text {csch}(x) \, dx}{a^2-b^2}-\frac {b^2 \int \frac {\cosh (x)}{b+a \cosh (x)} \, dx}{a^2-b^2}\\ &=-\frac {b^2 x}{a \left (a^2-b^2\right )}-\frac {a \coth (x)}{a^2-b^2}+\frac {a \int 1 \, dx}{a^2-b^2}+\frac {(i b) \operatorname {Subst}(\int 1 \, dx,x,-i \text {csch}(x))}{a^2-b^2}+\frac {b^3 \int \frac {1}{b+a \cosh (x)} \, dx}{a \left (a^2-b^2\right )}\\ &=\frac {a x}{a^2-b^2}-\frac {b^2 x}{a \left (a^2-b^2\right )}-\frac {a \coth (x)}{a^2-b^2}+\frac {b \text {csch}(x)}{a^2-b^2}+\frac {\left (2 b^3\right ) \operatorname {Subst}\left (\int \frac {1}{a+b-(-a+b) x^2} \, dx,x,\tanh \left (\frac {x}{2}\right )\right )}{a \left (a^2-b^2\right )}\\ &=\frac {a x}{a^2-b^2}-\frac {b^2 x}{a \left (a^2-b^2\right )}+\frac {2 b^3 \tan ^{-1}\left (\frac {\sqrt {a-b} \tanh \left (\frac {x}{2}\right )}{\sqrt {a+b}}\right )}{a (a-b)^{3/2} (a+b)^{3/2}}-\frac {a \coth (x)}{a^2-b^2}+\frac {b \text {csch}(x)}{a^2-b^2}\\ \end {align*}
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Mathematica [A] time = 0.35, size = 81, normalized size = 0.71 \[ \frac {\frac {2 b^3 \tan ^{-1}\left (\frac {(a-b) \tanh \left (\frac {x}{2}\right )}{\sqrt {a^2-b^2}}\right )}{\sqrt {a^2-b^2}}+a^2 x-a^2 \coth (x)+a b \text {csch}(x)-b^2 x}{a^3-a b^2} \]
Antiderivative was successfully verified.
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fricas [B] time = 0.42, size = 646, normalized size = 5.67 \[ \left [\frac {2 \, a^{4} - 2 \, a^{2} b^{2} - {\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} x \cosh \relax (x)^{2} - {\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} x \sinh \relax (x)^{2} - {\left (b^{3} \cosh \relax (x)^{2} + 2 \, b^{3} \cosh \relax (x) \sinh \relax (x) + b^{3} \sinh \relax (x)^{2} - b^{3}\right )} \sqrt {-a^{2} + b^{2}} \log \left (\frac {a^{2} \cosh \relax (x)^{2} + a^{2} \sinh \relax (x)^{2} + 2 \, a b \cosh \relax (x) - a^{2} + 2 \, b^{2} + 2 \, {\left (a^{2} \cosh \relax (x) + a b\right )} \sinh \relax (x) + 2 \, \sqrt {-a^{2} + b^{2}} {\left (a \cosh \relax (x) + a \sinh \relax (x) + b\right )}}{a \cosh \relax (x)^{2} + a \sinh \relax (x)^{2} + 2 \, b \cosh \relax (x) + 2 \, {\left (a \cosh \relax (x) + b\right )} \sinh \relax (x) + a}\right ) + {\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} x - 2 \, {\left (a^{3} b - a b^{3}\right )} \cosh \relax (x) - 2 \, {\left (a^{3} b - a b^{3} + {\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} x \cosh \relax (x)\right )} \sinh \relax (x)}{a^{5} - 2 \, a^{3} b^{2} + a b^{4} - {\left (a^{5} - 2 \, a^{3} b^{2} + a b^{4}\right )} \cosh \relax (x)^{2} - 2 \, {\left (a^{5} - 2 \, a^{3} b^{2} + a b^{4}\right )} \cosh \relax (x) \sinh \relax (x) - {\left (a^{5} - 2 \, a^{3} b^{2} + a b^{4}\right )} \sinh \relax (x)^{2}}, \frac {2 \, a^{4} - 2 \, a^{2} b^{2} - {\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} x \cosh \relax (x)^{2} - {\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} x \sinh \relax (x)^{2} + 2 \, {\left (b^{3} \cosh \relax (x)^{2} + 2 \, b^{3} \cosh \relax (x) \sinh \relax (x) + b^{3} \sinh \relax (x)^{2} - b^{3}\right )} \sqrt {a^{2} - b^{2}} \arctan \left (-\frac {a \cosh \relax (x) + a \sinh \relax (x) + b}{\sqrt {a^{2} - b^{2}}}\right ) + {\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} x - 2 \, {\left (a^{3} b - a b^{3}\right )} \cosh \relax (x) - 2 \, {\left (a^{3} b - a b^{3} + {\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} x \cosh \relax (x)\right )} \sinh \relax (x)}{a^{5} - 2 \, a^{3} b^{2} + a b^{4} - {\left (a^{5} - 2 \, a^{3} b^{2} + a b^{4}\right )} \cosh \relax (x)^{2} - 2 \, {\left (a^{5} - 2 \, a^{3} b^{2} + a b^{4}\right )} \cosh \relax (x) \sinh \relax (x) - {\left (a^{5} - 2 \, a^{3} b^{2} + a b^{4}\right )} \sinh \relax (x)^{2}}\right ] \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.13, size = 82, normalized size = 0.72 \[ \frac {2 \, b^{3} \arctan \left (\frac {a e^{x} + b}{\sqrt {a^{2} - b^{2}}}\right )}{{\left (a^{3} - a b^{2}\right )} \sqrt {a^{2} - b^{2}}} + \frac {x}{a} + \frac {2 \, {\left (b e^{x} - a\right )}}{{\left (a^{2} - b^{2}\right )} {\left (e^{\left (2 \, x\right )} - 1\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.18, size = 104, normalized size = 0.91 \[ -\frac {\tanh \left (\frac {x}{2}\right )}{2 \left (a -b \right )}-\frac {\ln \left (\tanh \left (\frac {x}{2}\right )-1\right )}{a}+\frac {2 b^{3} \arctan \left (\frac {\left (a -b \right ) \tanh \left (\frac {x}{2}\right )}{\sqrt {\left (a +b \right ) \left (a -b \right )}}\right )}{\left (a -b \right ) a \left (a +b \right ) \sqrt {\left (a +b \right ) \left (a -b \right )}}+\frac {\ln \left (\tanh \left (\frac {x}{2}\right )+1\right )}{a}-\frac {1}{2 \left (a +b \right ) \tanh \left (\frac {x}{2}\right )} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F(-2)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Exception raised: ValueError} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 1.67, size = 383, normalized size = 3.36 \[ \frac {x}{a}-\frac {\frac {2\,a}{a^2-b^2}-\frac {2\,b\,{\mathrm {e}}^x}{a^2-b^2}}{{\mathrm {e}}^{2\,x}-1}-\frac {2\,\mathrm {atan}\left (\left ({\mathrm {e}}^x\,\left (\frac {2\,b^3}{a^3\,\left (a\,b^2-a^3\right )\,\left (a^2-b^2\right )\,\sqrt {b^6}}-\frac {2\,\left (a\,b^3\,\sqrt {b^6}-a^3\,b\,\sqrt {b^6}\right )}{a^2\,b^2\,\left (a\,b^2-a^3\right )\,\sqrt {a^2\,{\left (a^2-b^2\right )}^3}\,\sqrt {a^8-3\,a^6\,b^2+3\,a^4\,b^4-a^2\,b^6}}\right )+\frac {2\,\left (a^4\,\sqrt {b^6}-a^2\,b^2\,\sqrt {b^6}\right )}{a^2\,b^2\,\left (a\,b^2-a^3\right )\,\sqrt {a^2\,{\left (a^2-b^2\right )}^3}\,\sqrt {a^8-3\,a^6\,b^2+3\,a^4\,b^4-a^2\,b^6}}\right )\,\left (\frac {a^4\,\sqrt {a^8-3\,a^6\,b^2+3\,a^4\,b^4-a^2\,b^6}}{2}-\frac {a^2\,b^2\,\sqrt {a^8-3\,a^6\,b^2+3\,a^4\,b^4-a^2\,b^6}}{2}\right )\right )\,\sqrt {b^6}}{\sqrt {a^8-3\,a^6\,b^2+3\,a^4\,b^4-a^2\,b^6}} \]
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 \[ \int \frac {\coth ^{2}{\relax (x )}}{a + b \operatorname {sech}{\relax (x )}}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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