Optimal. Leaf size=54 \[ \frac{2 \tan ^{-1}\left (\frac{(a-c) \tanh \left (\frac{x}{2}\right )+b}{\sqrt{a^2-b^2-c^2}}\right )}{\sqrt{a^2-b^2-c^2}} \]
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Rubi [A] time = 0.0817428, antiderivative size = 54, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 15, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.267, Rules used = {3165, 3124, 618, 204} \[ \frac{2 \tan ^{-1}\left (\frac{(a-c) \tanh \left (\frac{x}{2}\right )+b}{\sqrt{a^2-b^2-c^2}}\right )}{\sqrt{a^2-b^2-c^2}} \]
Antiderivative was successfully verified.
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Rule 3165
Rule 3124
Rule 618
Rule 204
Rubi steps
\begin{align*} \int \frac{\text{sech}(x)}{a+c \text{sech}(x)+b \tanh (x)} \, dx &=\int \frac{1}{c+a \cosh (x)+b \sinh (x)} \, dx\\ &=2 \operatorname{Subst}\left (\int \frac{1}{a+c+2 b x-(-a+c) x^2} \, dx,x,\tanh \left (\frac{x}{2}\right )\right )\\ &=-\left (4 \operatorname{Subst}\left (\int \frac{1}{-4 \left (a^2-b^2-c^2\right )-x^2} \, dx,x,2 b+2 (a-c) \tanh \left (\frac{x}{2}\right )\right )\right )\\ &=\frac{2 \tan ^{-1}\left (\frac{b+(a-c) \tanh \left (\frac{x}{2}\right )}{\sqrt{a^2-b^2-c^2}}\right )}{\sqrt{a^2-b^2-c^2}}\\ \end{align*}
Mathematica [A] time = 0.0411778, size = 54, normalized size = 1. \[ \frac{2 \tan ^{-1}\left (\frac{(a-c) \tanh \left (\frac{x}{2}\right )+b}{\sqrt{a^2-b^2-c^2}}\right )}{\sqrt{a^2-b^2-c^2}} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.05, size = 53, normalized size = 1. \begin{align*} 2\,{\frac{1}{\sqrt{{a}^{2}-{b}^{2}-{c}^{2}}}\arctan \left ( 1/2\,{\frac{2\, \left ( a-c \right ) \tanh \left ( x/2 \right ) +2\,b}{\sqrt{{a}^{2}-{b}^{2}-{c}^{2}}}} \right ) } \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: ValueError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 2.46489, size = 637, normalized size = 11.8 \begin{align*} \left [-\frac{\sqrt{-a^{2} + b^{2} + c^{2}} \log \left (\frac{2 \,{\left (a + b\right )} c \cosh \left (x\right ) +{\left (a^{2} + 2 \, a b + b^{2}\right )} \cosh \left (x\right )^{2} +{\left (a^{2} + 2 \, a b + b^{2}\right )} \sinh \left (x\right )^{2} - a^{2} + b^{2} + 2 \, c^{2} + 2 \,{\left ({\left (a + b\right )} c +{\left (a^{2} + 2 \, a b + b^{2}\right )} \cosh \left (x\right )\right )} \sinh \left (x\right ) - 2 \, \sqrt{-a^{2} + b^{2} + c^{2}}{\left ({\left (a + b\right )} \cosh \left (x\right ) +{\left (a + b\right )} \sinh \left (x\right ) + c\right )}}{{\left (a + b\right )} \cosh \left (x\right )^{2} +{\left (a + b\right )} \sinh \left (x\right )^{2} + 2 \, c \cosh \left (x\right ) + 2 \,{\left ({\left (a + b\right )} \cosh \left (x\right ) + c\right )} \sinh \left (x\right ) + a - b}\right )}{a^{2} - b^{2} - c^{2}}, -\frac{2 \, \arctan \left (-\frac{{\left (a + b\right )} \cosh \left (x\right ) +{\left (a + b\right )} \sinh \left (x\right ) + c}{\sqrt{a^{2} - b^{2} - c^{2}}}\right )}{\sqrt{a^{2} - b^{2} - c^{2}}}\right ] \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 \frac{\operatorname{sech}{\left (x \right )}}{a + b \tanh{\left (x \right )} + c \operatorname{sech}{\left (x \right )}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.1844, size = 62, normalized size = 1.15 \begin{align*} \frac{2 \, \arctan \left (\frac{a e^{x} + b e^{x} + c}{\sqrt{a^{2} - b^{2} - c^{2}}}\right )}{\sqrt{a^{2} - b^{2} - c^{2}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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