Optimal. Leaf size=62 \[ -\frac {a x}{b^2}+\frac {2 a^2 \tanh ^{-1}\left (\frac {\sqrt {a-b} \tanh \left (\frac {x}{2}\right )}{\sqrt {a+b}}\right )}{\sqrt {a-b} b^2 \sqrt {a+b}}+\frac {\sinh (x)}{b} \]
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Rubi [A]
time = 0.08, antiderivative size = 62, normalized size of antiderivative = 1.00, number of steps
used = 5, number of rules used = 5, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.385, Rules used = {2825, 12, 2814,
2738, 214} \begin {gather*} \frac {2 a^2 \tanh ^{-1}\left (\frac {\sqrt {a-b} \tanh \left (\frac {x}{2}\right )}{\sqrt {a+b}}\right )}{b^2 \sqrt {a-b} \sqrt {a+b}}-\frac {a x}{b^2}+\frac {\sinh (x)}{b} \end {gather*}
Antiderivative was successfully verified.
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Rule 12
Rule 214
Rule 2738
Rule 2814
Rule 2825
Rubi steps
\begin {align*} \int \frac {\cosh ^2(x)}{a+b \cosh (x)} \, dx &=\frac {\sinh (x)}{b}-\frac {\int \frac {a \cosh (x)}{a+b \cosh (x)} \, dx}{b}\\ &=\frac {\sinh (x)}{b}-\frac {a \int \frac {\cosh (x)}{a+b \cosh (x)} \, dx}{b}\\ &=-\frac {a x}{b^2}+\frac {\sinh (x)}{b}+\frac {a^2 \int \frac {1}{a+b \cosh (x)} \, dx}{b^2}\\ &=-\frac {a x}{b^2}+\frac {\sinh (x)}{b}+\frac {\left (2 a^2\right ) \text {Subst}\left (\int \frac {1}{a+b-(a-b) x^2} \, dx,x,\tanh \left (\frac {x}{2}\right )\right )}{b^2}\\ &=-\frac {a x}{b^2}+\frac {2 a^2 \tanh ^{-1}\left (\frac {\sqrt {a-b} \tanh \left (\frac {x}{2}\right )}{\sqrt {a+b}}\right )}{\sqrt {a-b} b^2 \sqrt {a+b}}+\frac {\sinh (x)}{b}\\ \end {align*}
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Mathematica [A]
time = 0.08, size = 57, normalized size = 0.92 \begin {gather*} \frac {a \left (-x-\frac {2 a \text {ArcTan}\left (\frac {(a-b) \tanh \left (\frac {x}{2}\right )}{\sqrt {-a^2+b^2}}\right )}{\sqrt {-a^2+b^2}}\right )+b \sinh (x)}{b^2} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.44, size = 94, normalized size = 1.52
method | result | size |
default | \(\frac {2 a^{2} \arctanh \left (\frac {\left (a -b \right ) \tanh \left (\frac {x}{2}\right )}{\sqrt {\left (a +b \right ) \left (a -b \right )}}\right )}{b^{2} \sqrt {\left (a +b \right ) \left (a -b \right )}}-\frac {1}{b \left (\tanh \left (\frac {x}{2}\right )-1\right )}+\frac {a \ln \left (\tanh \left (\frac {x}{2}\right )-1\right )}{b^{2}}-\frac {1}{b \left (\tanh \left (\frac {x}{2}\right )+1\right )}-\frac {a \ln \left (\tanh \left (\frac {x}{2}\right )+1\right )}{b^{2}}\) | \(94\) |
risch | \(-\frac {a x}{b^{2}}+\frac {{\mathrm e}^{x}}{2 b}-\frac {{\mathrm e}^{-x}}{2 b}+\frac {a^{2} \ln \left ({\mathrm e}^{x}+\frac {a \sqrt {a^{2}-b^{2}}-a^{2}+b^{2}}{b \sqrt {a^{2}-b^{2}}}\right )}{\sqrt {a^{2}-b^{2}}\, b^{2}}-\frac {a^{2} \ln \left ({\mathrm e}^{x}+\frac {a \sqrt {a^{2}-b^{2}}+a^{2}-b^{2}}{b \sqrt {a^{2}-b^{2}}}\right )}{\sqrt {a^{2}-b^{2}}\, b^{2}}\) | \(144\) |
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 \begin {gather*} \text {Exception raised: ValueError} \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. 190 vs.
\(2 (52) = 104\).
time = 0.44, size = 449, normalized size = 7.24 \begin {gather*} \left [-\frac {a^{2} b - b^{3} + 2 \, {\left (a^{3} - a b^{2}\right )} x \cosh \left (x\right ) - {\left (a^{2} b - b^{3}\right )} \cosh \left (x\right )^{2} - {\left (a^{2} b - b^{3}\right )} \sinh \left (x\right )^{2} - 2 \, {\left (a^{2} \cosh \left (x\right ) + a^{2} \sinh \left (x\right )\right )} \sqrt {a^{2} - b^{2}} \log \left (\frac {b^{2} \cosh \left (x\right )^{2} + b^{2} \sinh \left (x\right )^{2} + 2 \, a b \cosh \left (x\right ) + 2 \, a^{2} - b^{2} + 2 \, {\left (b^{2} \cosh \left (x\right ) + a b\right )} \sinh \left (x\right ) - 2 \, \sqrt {a^{2} - b^{2}} {\left (b \cosh \left (x\right ) + b \sinh \left (x\right ) + a\right )}}{b \cosh \left (x\right )^{2} + b \sinh \left (x\right )^{2} + 2 \, a \cosh \left (x\right ) + 2 \, {\left (b \cosh \left (x\right ) + a\right )} \sinh \left (x\right ) + b}\right ) + 2 \, {\left ({\left (a^{3} - a b^{2}\right )} x - {\left (a^{2} b - b^{3}\right )} \cosh \left (x\right )\right )} \sinh \left (x\right )}{2 \, {\left ({\left (a^{2} b^{2} - b^{4}\right )} \cosh \left (x\right ) + {\left (a^{2} b^{2} - b^{4}\right )} \sinh \left (x\right )\right )}}, -\frac {a^{2} b - b^{3} + 2 \, {\left (a^{3} - a b^{2}\right )} x \cosh \left (x\right ) - {\left (a^{2} b - b^{3}\right )} \cosh \left (x\right )^{2} - {\left (a^{2} b - b^{3}\right )} \sinh \left (x\right )^{2} + 4 \, {\left (a^{2} \cosh \left (x\right ) + a^{2} \sinh \left (x\right )\right )} \sqrt {-a^{2} + b^{2}} \arctan \left (-\frac {\sqrt {-a^{2} + b^{2}} {\left (b \cosh \left (x\right ) + b \sinh \left (x\right ) + a\right )}}{a^{2} - b^{2}}\right ) + 2 \, {\left ({\left (a^{3} - a b^{2}\right )} x - {\left (a^{2} b - b^{3}\right )} \cosh \left (x\right )\right )} \sinh \left (x\right )}{2 \, {\left ({\left (a^{2} b^{2} - b^{4}\right )} \cosh \left (x\right ) + {\left (a^{2} b^{2} - b^{4}\right )} \sinh \left (x\right )\right )}}\right ] \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. 1275 vs.
\(2 (53) = 106\).
time = 71.86, size = 1275, normalized size = 20.56 \begin {gather*} \begin {cases} \tilde {\infty } \sinh {\left (x \right )} & \text {for}\: a = 0 \wedge b = 0 \\- \frac {x \tanh ^{2}{\left (\frac {x}{2} \right )}}{b \tanh ^{2}{\left (\frac {x}{2} \right )} - b} + \frac {x}{b \tanh ^{2}{\left (\frac {x}{2} \right )} - b} + \frac {\tanh ^{3}{\left (\frac {x}{2} \right )}}{b \tanh ^{2}{\left (\frac {x}{2} \right )} - b} - \frac {3 \tanh {\left (\frac {x}{2} \right )}}{b \tanh ^{2}{\left (\frac {x}{2} \right )} - b} & \text {for}\: a = b \\\frac {x \tanh ^{3}{\left (\frac {x}{2} \right )}}{b \tanh ^{3}{\left (\frac {x}{2} \right )} - b \tanh {\left (\frac {x}{2} \right )}} - \frac {x \tanh {\left (\frac {x}{2} \right )}}{b \tanh ^{3}{\left (\frac {x}{2} \right )} - b \tanh {\left (\frac {x}{2} \right )}} - \frac {3 \tanh ^{2}{\left (\frac {x}{2} \right )}}{b \tanh ^{3}{\left (\frac {x}{2} \right )} - b \tanh {\left (\frac {x}{2} \right )}} + \frac {1}{b \tanh ^{3}{\left (\frac {x}{2} \right )} - b \tanh {\left (\frac {x}{2} \right )}} & \text {for}\: a = - b \\\frac {- \frac {x \sinh ^{2}{\left (x \right )}}{2} + \frac {x \cosh ^{2}{\left (x \right )}}{2} + \frac {\sinh {\left (x \right )} \cosh {\left (x \right )}}{2}}{a} & \text {for}\: b = 0 \\- \frac {a^{2} x \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )}}{a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} - a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} - b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} + b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}}} + \frac {a^{2} x \sqrt {\frac {a}{a - b} + \frac {b}{a - b}}}{a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} - a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} - b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} + b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}}} - \frac {a^{2} \log {\left (- \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} + \tanh {\left (\frac {x}{2} \right )} \right )} \tanh ^{2}{\left (\frac {x}{2} \right )}}{a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} - a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} - b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} + b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}}} + \frac {a^{2} \log {\left (- \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} + \tanh {\left (\frac {x}{2} \right )} \right )}}{a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} - a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} - b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} + b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}}} + \frac {a^{2} \log {\left (\sqrt {\frac {a}{a - b} + \frac {b}{a - b}} + \tanh {\left (\frac {x}{2} \right )} \right )} \tanh ^{2}{\left (\frac {x}{2} \right )}}{a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} - a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} - b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} + b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}}} - \frac {a^{2} \log {\left (\sqrt {\frac {a}{a - b} + \frac {b}{a - b}} + \tanh {\left (\frac {x}{2} \right )} \right )}}{a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} - a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} - b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} + b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}}} + \frac {a b x \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )}}{a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} - a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} - b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} + b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}}} - \frac {a b x \sqrt {\frac {a}{a - b} + \frac {b}{a - b}}}{a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} - a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} - b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} + b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}}} - \frac {2 a b \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh {\left (\frac {x}{2} \right )}}{a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} - a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} - b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} + b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}}} + \frac {2 b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh {\left (\frac {x}{2} \right )}}{a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} - a b^{2} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} - b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}} \tanh ^{2}{\left (\frac {x}{2} \right )} + b^{3} \sqrt {\frac {a}{a - b} + \frac {b}{a - b}}} & \text {otherwise} \end {cases} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.43, size = 62, normalized size = 1.00 \begin {gather*} \frac {2 \, a^{2} \arctan \left (\frac {b e^{x} + a}{\sqrt {-a^{2} + b^{2}}}\right )}{\sqrt {-a^{2} + b^{2}} b^{2}} - \frac {a x}{b^{2}} - \frac {e^{\left (-x\right )}}{2 \, b} + \frac {e^{x}}{2 \, b} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 1.04, size = 139, normalized size = 2.24 \begin {gather*} \frac {{\mathrm {e}}^x}{2\,b}-\frac {{\mathrm {e}}^{-x}}{2\,b}-\frac {a\,x}{b^2}+\frac {a^2\,\ln \left (-\frac {2\,a^2\,{\mathrm {e}}^x}{b^3}-\frac {2\,a^2\,\left (b+a\,{\mathrm {e}}^x\right )}{b^3\,\sqrt {a+b}\,\sqrt {a-b}}\right )}{b^2\,\sqrt {a+b}\,\sqrt {a-b}}-\frac {a^2\,\ln \left (\frac {2\,a^2\,\left (b+a\,{\mathrm {e}}^x\right )}{b^3\,\sqrt {a+b}\,\sqrt {a-b}}-\frac {2\,a^2\,{\mathrm {e}}^x}{b^3}\right )}{b^2\,\sqrt {a+b}\,\sqrt {a-b}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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