Optimal. Leaf size=72 \[ \frac {a b \text {ArcTan}\left (\frac {b \cosh (x)+a \sinh (x)}{\sqrt {a^2-b^2}}\right )}{\left (a^2-b^2\right )^{3/2}}+\frac {a \cosh (x)}{a^2-b^2}-\frac {b \sinh (x)}{a^2-b^2} \]
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Rubi [A]
time = 0.06, antiderivative size = 72, normalized size of antiderivative = 1.00, number of steps
used = 5, number of rules used = 5, integrand size = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.312, Rules used = {3188, 2717,
2718, 3153, 212} \begin {gather*} \frac {a b \text {ArcTan}\left (\frac {a \sinh (x)+b \cosh (x)}{\sqrt {a^2-b^2}}\right )}{\left (a^2-b^2\right )^{3/2}}-\frac {b \sinh (x)}{a^2-b^2}+\frac {a \cosh (x)}{a^2-b^2} \end {gather*}
Antiderivative was successfully verified.
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Rule 212
Rule 2717
Rule 2718
Rule 3153
Rule 3188
Rubi steps
\begin {align*} \int \frac {\cosh (x) \sinh (x)}{a \cosh (x)+b \sinh (x)} \, dx &=\frac {a \int \sinh (x) \, dx}{a^2-b^2}-\frac {b \int \cosh (x) \, dx}{a^2-b^2}+\frac {(a b) \int \frac {1}{a \cosh (x)+b \sinh (x)} \, dx}{a^2-b^2}\\ &=\frac {a \cosh (x)}{a^2-b^2}-\frac {b \sinh (x)}{a^2-b^2}+\frac {(i a b) \text {Subst}\left (\int \frac {1}{a^2-b^2-x^2} \, dx,x,-i b \cosh (x)-i a \sinh (x)\right )}{a^2-b^2}\\ &=\frac {a b \tan ^{-1}\left (\frac {b \cosh (x)+a \sinh (x)}{\sqrt {a^2-b^2}}\right )}{\left (a^2-b^2\right )^{3/2}}+\frac {a \cosh (x)}{a^2-b^2}-\frac {b \sinh (x)}{a^2-b^2}\\ \end {align*}
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Mathematica [A]
time = 0.14, size = 79, normalized size = 1.10 \begin {gather*} \frac {2 a b \text {ArcTan}\left (\frac {b+a \tanh \left (\frac {x}{2}\right )}{\sqrt {a-b} \sqrt {a+b}}\right )}{(a-b)^{3/2} (a+b)^{3/2}}+\frac {a \cosh (x)}{a^2-b^2}+\frac {b \sinh (x)}{-a^2+b^2} \end {gather*}
Antiderivative was successfully verified.
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Maple [A]
time = 0.91, size = 92, normalized size = 1.28
method | result | size |
default | \(\frac {2 a b \arctan \left (\frac {2 a \tanh \left (\frac {x}{2}\right )+2 b}{2 \sqrt {a^{2}-b^{2}}}\right )}{\left (a +b \right ) \left (a -b \right ) \sqrt {a^{2}-b^{2}}}-\frac {4}{\left (4 a +4 b \right ) \left (\tanh \left (\frac {x}{2}\right )-1\right )}+\frac {4}{\left (4 a -4 b \right ) \left (\tanh \left (\frac {x}{2}\right )+1\right )}\) | \(92\) |
risch | \(\frac {{\mathrm e}^{x}}{2 b +2 a}+\frac {{\mathrm e}^{-x}}{2 a -2 b}-\frac {b a \ln \left ({\mathrm e}^{x}-\frac {a -b}{\sqrt {-a^{2}+b^{2}}}\right )}{\sqrt {-a^{2}+b^{2}}\, \left (a +b \right ) \left (a -b \right )}+\frac {b a \ln \left ({\mathrm e}^{x}+\frac {a -b}{\sqrt {-a^{2}+b^{2}}}\right )}{\sqrt {-a^{2}+b^{2}}\, \left (a +b \right ) \left (a -b \right )}\) | \(120\) |
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. 186 vs.
\(2 (68) = 136\).
time = 0.39, size = 427, normalized size = 5.93 \begin {gather*} \left [\frac {a^{3} + a^{2} b - a b^{2} - b^{3} + {\left (a^{3} - a^{2} b - a b^{2} + b^{3}\right )} \cosh \left (x\right )^{2} + 2 \, {\left (a^{3} - a^{2} b - a b^{2} + b^{3}\right )} \cosh \left (x\right ) \sinh \left (x\right ) + {\left (a^{3} - a^{2} b - a b^{2} + b^{3}\right )} \sinh \left (x\right )^{2} + 2 \, {\left (a b \cosh \left (x\right ) + a b \sinh \left (x\right )\right )} \sqrt {-a^{2} + b^{2}} \log \left (\frac {{\left (a + b\right )} \cosh \left (x\right )^{2} + 2 \, {\left (a + b\right )} \cosh \left (x\right ) \sinh \left (x\right ) + {\left (a + b\right )} \sinh \left (x\right )^{2} + 2 \, \sqrt {-a^{2} + b^{2}} {\left (\cosh \left (x\right ) + \sinh \left (x\right )\right )} - a + b}{{\left (a + b\right )} \cosh \left (x\right )^{2} + 2 \, {\left (a + b\right )} \cosh \left (x\right ) \sinh \left (x\right ) + {\left (a + b\right )} \sinh \left (x\right )^{2} + a - b}\right )}{2 \, {\left ({\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} \cosh \left (x\right ) + {\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} \sinh \left (x\right )\right )}}, \frac {a^{3} + a^{2} b - a b^{2} - b^{3} + {\left (a^{3} - a^{2} b - a b^{2} + b^{3}\right )} \cosh \left (x\right )^{2} + 2 \, {\left (a^{3} - a^{2} b - a b^{2} + b^{3}\right )} \cosh \left (x\right ) \sinh \left (x\right ) + {\left (a^{3} - a^{2} b - a b^{2} + b^{3}\right )} \sinh \left (x\right )^{2} - 4 \, {\left (a b \cosh \left (x\right ) + a b \sinh \left (x\right )\right )} \sqrt {a^{2} - b^{2}} \arctan \left (\frac {\sqrt {a^{2} - b^{2}}}{{\left (a + b\right )} \cosh \left (x\right ) + {\left (a + b\right )} \sinh \left (x\right )}\right )}{2 \, {\left ({\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} \cosh \left (x\right ) + {\left (a^{4} - 2 \, 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. 678 vs.
\(2 (58) = 116\).
time = 124.06, size = 678, normalized size = 9.42 \begin {gather*} \begin {cases} \tilde {\infty } \sinh {\left (x \right )} & \text {for}\: a = 0 \wedge b = 0 \\\frac {\sinh {\left (x \right )}}{b} & \text {for}\: a = 0 \\- \frac {\sinh ^{2}{\left (x \right )}}{- 3 b \sinh {\left (x \right )} + 3 b \cosh {\left (x \right )}} + \frac {\sinh {\left (x \right )} \cosh {\left (x \right )}}{- 3 b \sinh {\left (x \right )} + 3 b \cosh {\left (x \right )}} - \frac {\cosh ^{2}{\left (x \right )}}{- 3 b \sinh {\left (x \right )} + 3 b \cosh {\left (x \right )}} & \text {for}\: a = - b \\\frac {\sinh ^{2}{\left (x \right )}}{3 b \sinh {\left (x \right )} + 3 b \cosh {\left (x \right )}} + \frac {\sinh {\left (x \right )} \cosh {\left (x \right )}}{3 b \sinh {\left (x \right )} + 3 b \cosh {\left (x \right )}} + \frac {\cosh ^{2}{\left (x \right )}}{3 b \sinh {\left (x \right )} + 3 b \cosh {\left (x \right )}} & \text {for}\: a = b \\\frac {a b \log {\left (\tanh {\left (\frac {x}{2} \right )} + \frac {b}{a} - \frac {\sqrt {- a^{2} + b^{2}}}{a} \right )} \tanh ^{2}{\left (\frac {x}{2} \right )}}{a^{2} \sqrt {- a^{2} + b^{2}} \tanh ^{2}{\left (\frac {x}{2} \right )} - a^{2} \sqrt {- a^{2} + b^{2}} - b^{2} \sqrt {- a^{2} + b^{2}} \tanh ^{2}{\left (\frac {x}{2} \right )} + b^{2} \sqrt {- a^{2} + b^{2}}} - \frac {a b \log {\left (\tanh {\left (\frac {x}{2} \right )} + \frac {b}{a} - \frac {\sqrt {- a^{2} + b^{2}}}{a} \right )}}{a^{2} \sqrt {- a^{2} + b^{2}} \tanh ^{2}{\left (\frac {x}{2} \right )} - a^{2} \sqrt {- a^{2} + b^{2}} - b^{2} \sqrt {- a^{2} + b^{2}} \tanh ^{2}{\left (\frac {x}{2} \right )} + b^{2} \sqrt {- a^{2} + b^{2}}} - \frac {a b \log {\left (\tanh {\left (\frac {x}{2} \right )} + \frac {b}{a} + \frac {\sqrt {- a^{2} + b^{2}}}{a} \right )} \tanh ^{2}{\left (\frac {x}{2} \right )}}{a^{2} \sqrt {- a^{2} + b^{2}} \tanh ^{2}{\left (\frac {x}{2} \right )} - a^{2} \sqrt {- a^{2} + b^{2}} - b^{2} \sqrt {- a^{2} + b^{2}} \tanh ^{2}{\left (\frac {x}{2} \right )} + b^{2} \sqrt {- a^{2} + b^{2}}} + \frac {a b \log {\left (\tanh {\left (\frac {x}{2} \right )} + \frac {b}{a} + \frac {\sqrt {- a^{2} + b^{2}}}{a} \right )}}{a^{2} \sqrt {- a^{2} + b^{2}} \tanh ^{2}{\left (\frac {x}{2} \right )} - a^{2} \sqrt {- a^{2} + b^{2}} - b^{2} \sqrt {- a^{2} + b^{2}} \tanh ^{2}{\left (\frac {x}{2} \right )} + b^{2} \sqrt {- a^{2} + b^{2}}} - \frac {2 a \sqrt {- a^{2} + b^{2}}}{a^{2} \sqrt {- a^{2} + b^{2}} \tanh ^{2}{\left (\frac {x}{2} \right )} - a^{2} \sqrt {- a^{2} + b^{2}} - b^{2} \sqrt {- a^{2} + b^{2}} \tanh ^{2}{\left (\frac {x}{2} \right )} + b^{2} \sqrt {- a^{2} + b^{2}}} + \frac {2 b \sqrt {- a^{2} + b^{2}} \tanh {\left (\frac {x}{2} \right )}}{a^{2} \sqrt {- a^{2} + b^{2}} \tanh ^{2}{\left (\frac {x}{2} \right )} - a^{2} \sqrt {- a^{2} + b^{2}} - b^{2} \sqrt {- a^{2} + b^{2}} \tanh ^{2}{\left (\frac {x}{2} \right )} + b^{2} \sqrt {- a^{2} + b^{2}}} & \text {otherwise} \end {cases} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 0.40, size = 60, normalized size = 0.83 \begin {gather*} \frac {2 \, a b \arctan \left (\frac {a e^{x} + b e^{x}}{\sqrt {a^{2} - b^{2}}}\right )}{{\left (a^{2} - b^{2}\right )}^{\frac {3}{2}}} + \frac {e^{\left (-x\right )}}{2 \, {\left (a - b\right )}} + \frac {e^{x}}{2 \, {\left (a + b\right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [B]
time = 1.69, size = 157, normalized size = 2.18 \begin {gather*} \frac {{\mathrm {e}}^x}{2\,a+2\,b}+\frac {{\mathrm {e}}^{-x}}{2\,a-2\,b}+\frac {2\,\mathrm {atan}\left (\frac {a\,b\,{\mathrm {e}}^x\,\sqrt {a^6-3\,a^4\,b^2+3\,a^2\,b^4-b^6}}{a^3\,\sqrt {a^2\,b^2}+b^3\,\sqrt {a^2\,b^2}-a\,b^2\,\sqrt {a^2\,b^2}-a^2\,b\,\sqrt {a^2\,b^2}}\right )\,\sqrt {a^2\,b^2}}{\sqrt {a^6-3\,a^4\,b^2+3\,a^2\,b^4-b^6}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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