Optimal. Leaf size=133 \[ -\frac {3 a b^2 \tan ^{-1}\left (\frac {a \sinh (x)+b \cosh (x)}{\sqrt {a^2-b^2}}\right )}{\left (a^2-b^2\right )^{5/2}}-\frac {2 b^3 \left (a+b \tanh \left (\frac {x}{2}\right )\right )}{a \left (a^2-b^2\right )^2 \left (a \tanh ^2\left (\frac {x}{2}\right )+a+2 b \tanh \left (\frac {x}{2}\right )\right )}+\frac {1}{(a+b)^2 \left (1-\tanh \left (\frac {x}{2}\right )\right )}-\frac {1}{(a-b)^2 \left (\tanh \left (\frac {x}{2}\right )+1\right )} \]
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Rubi [A] time = 0.78, antiderivative size = 193, normalized size of antiderivative = 1.45, number of steps used = 8, number of rules used = 4, integrand size = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.250, Rules used = {6742, 638, 618, 204} \[ -\frac {2 b^3 \left (a+b \tanh \left (\frac {x}{2}\right )\right )}{a \left (a^2-b^2\right )^2 \left (a \tanh ^2\left (\frac {x}{2}\right )+a+2 b \tanh \left (\frac {x}{2}\right )\right )}-\frac {2 b^4 \tan ^{-1}\left (\frac {a \tanh \left (\frac {x}{2}\right )+b}{\sqrt {a^2-b^2}}\right )}{a \left (a^2-b^2\right )^{5/2}}-\frac {2 b^2 \left (3 a^2-b^2\right ) \tan ^{-1}\left (\frac {a \tanh \left (\frac {x}{2}\right )+b}{\sqrt {a^2-b^2}}\right )}{a \left (a^2-b^2\right )^{5/2}}+\frac {1}{(a+b)^2 \left (1-\tanh \left (\frac {x}{2}\right )\right )}-\frac {1}{(a-b)^2 \left (\tanh \left (\frac {x}{2}\right )+1\right )} \]
Antiderivative was successfully verified.
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Rule 204
Rule 618
Rule 638
Rule 6742
Rubi steps
\begin {align*} \int \frac {\cosh ^3(x)}{(a \cosh (x)+b \sinh (x))^2} \, dx &=2 \operatorname {Subst}\left (\int \frac {\left (1+x^2\right )^3}{\left (1-x^2\right )^2 \left (a+2 b x+a x^2\right )^2} \, dx,x,\tanh \left (\frac {x}{2}\right )\right )\\ &=2 \operatorname {Subst}\left (\int \left (\frac {1}{2 (a+b)^2 (-1+x)^2}+\frac {1}{2 (a-b)^2 (1+x)^2}-\frac {2 b^3 x}{a \left (-a^2+b^2\right ) \left (a+2 b x+a x^2\right )^2}+\frac {-3 a^2 b^2+b^4}{a \left (a^2-b^2\right )^2 \left (a+2 b x+a x^2\right )}\right ) \, dx,x,\tanh \left (\frac {x}{2}\right )\right )\\ &=\frac {1}{(a+b)^2 \left (1-\tanh \left (\frac {x}{2}\right )\right )}-\frac {1}{(a-b)^2 \left (1+\tanh \left (\frac {x}{2}\right )\right )}+\frac {\left (4 b^3\right ) \operatorname {Subst}\left (\int \frac {x}{\left (a+2 b x+a x^2\right )^2} \, dx,x,\tanh \left (\frac {x}{2}\right )\right )}{a \left (a^2-b^2\right )}-\frac {\left (2 b^2 \left (3 a^2-b^2\right )\right ) \operatorname {Subst}\left (\int \frac {1}{a+2 b x+a x^2} \, dx,x,\tanh \left (\frac {x}{2}\right )\right )}{a \left (a^2-b^2\right )^2}\\ &=\frac {1}{(a+b)^2 \left (1-\tanh \left (\frac {x}{2}\right )\right )}-\frac {1}{(a-b)^2 \left (1+\tanh \left (\frac {x}{2}\right )\right )}-\frac {2 b^3 \left (a+b \tanh \left (\frac {x}{2}\right )\right )}{a \left (a^2-b^2\right )^2 \left (a+2 b \tanh \left (\frac {x}{2}\right )+a \tanh ^2\left (\frac {x}{2}\right )\right )}-\frac {\left (2 b^4\right ) \operatorname {Subst}\left (\int \frac {1}{a+2 b x+a x^2} \, dx,x,\tanh \left (\frac {x}{2}\right )\right )}{a \left (a^2-b^2\right )^2}+\frac {\left (4 b^2 \left (3 a^2-b^2\right )\right ) \operatorname {Subst}\left (\int \frac {1}{-4 \left (a^2-b^2\right )-x^2} \, dx,x,2 b+2 a \tanh \left (\frac {x}{2}\right )\right )}{a \left (a^2-b^2\right )^2}\\ &=-\frac {2 b^2 \left (3 a^2-b^2\right ) \tan ^{-1}\left (\frac {b+a \tanh \left (\frac {x}{2}\right )}{\sqrt {a^2-b^2}}\right )}{a \left (a^2-b^2\right )^{5/2}}+\frac {1}{(a+b)^2 \left (1-\tanh \left (\frac {x}{2}\right )\right )}-\frac {1}{(a-b)^2 \left (1+\tanh \left (\frac {x}{2}\right )\right )}-\frac {2 b^3 \left (a+b \tanh \left (\frac {x}{2}\right )\right )}{a \left (a^2-b^2\right )^2 \left (a+2 b \tanh \left (\frac {x}{2}\right )+a \tanh ^2\left (\frac {x}{2}\right )\right )}+\frac {\left (4 b^4\right ) \operatorname {Subst}\left (\int \frac {1}{-4 \left (a^2-b^2\right )-x^2} \, dx,x,2 b+2 a \tanh \left (\frac {x}{2}\right )\right )}{a \left (a^2-b^2\right )^2}\\ &=-\frac {2 b^4 \tan ^{-1}\left (\frac {b+a \tanh \left (\frac {x}{2}\right )}{\sqrt {a^2-b^2}}\right )}{a \left (a^2-b^2\right )^{5/2}}-\frac {2 b^2 \left (3 a^2-b^2\right ) \tan ^{-1}\left (\frac {b+a \tanh \left (\frac {x}{2}\right )}{\sqrt {a^2-b^2}}\right )}{a \left (a^2-b^2\right )^{5/2}}+\frac {1}{(a+b)^2 \left (1-\tanh \left (\frac {x}{2}\right )\right )}-\frac {1}{(a-b)^2 \left (1+\tanh \left (\frac {x}{2}\right )\right )}-\frac {2 b^3 \left (a+b \tanh \left (\frac {x}{2}\right )\right )}{a \left (a^2-b^2\right )^2 \left (a+2 b \tanh \left (\frac {x}{2}\right )+a \tanh ^2\left (\frac {x}{2}\right )\right )}\\ \end {align*}
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Mathematica [A] time = 0.37, size = 204, normalized size = 1.53 \[ \frac {-2 a^2 b \sqrt {a-b} (a+b) \cosh ^2(x)+b \sqrt {a-b} \left (a^3+a^2 b+a b^2+b^3\right ) \sinh ^2(x)-6 a b^3 \sqrt {a+b} \sinh (x) \tan ^{-1}\left (\frac {a \tanh \left (\frac {x}{2}\right )+b}{\sqrt {a-b} \sqrt {a+b}}\right )+b^3 \left (-\sqrt {a-b}\right ) (a+b)+a \cosh (x) \left ((a-b)^{3/2} (a+b)^2 \sinh (x)-6 a b^2 \sqrt {a+b} \tan ^{-1}\left (\frac {a \tanh \left (\frac {x}{2}\right )+b}{\sqrt {a-b} \sqrt {a+b}}\right )\right )}{(a-b)^{5/2} (a+b)^3 (a \cosh (x)+b \sinh (x))} \]
Antiderivative was successfully verified.
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fricas [B] time = 0.48, size = 1645, normalized size = 12.37 \[ \text {result too large to display} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.14, size = 174, normalized size = 1.31 \[ -\frac {6 \, a b^{2} \arctan \left (\frac {a e^{x} + b e^{x}}{\sqrt {a^{2} - b^{2}}}\right )}{{\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} \sqrt {a^{2} - b^{2}}} + \frac {e^{x}}{2 \, {\left (a^{2} + 2 \, a b + b^{2}\right )}} - \frac {a^{3} e^{\left (2 \, x\right )} + 3 \, a^{2} b e^{\left (2 \, x\right )} + 3 \, a b^{2} e^{\left (2 \, x\right )} + 5 \, b^{3} e^{\left (2 \, x\right )} + a^{3} + a^{2} b - a b^{2} - b^{3}}{2 \, {\left (a^{4} - 2 \, a^{2} b^{2} + b^{4}\right )} {\left (a e^{\left (3 \, x\right )} + b e^{\left (3 \, x\right )} + a e^{x} - b e^{x}\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.27, size = 167, normalized size = 1.26 \[ -\frac {1}{\left (a +b \right )^{2} \left (\tanh \left (\frac {x}{2}\right )-1\right )}-\frac {2 b^{4} \tanh \left (\frac {x}{2}\right )}{\left (a -b \right )^{2} \left (a +b \right )^{2} a \left (a +2 \tanh \left (\frac {x}{2}\right ) b +a \left (\tanh ^{2}\left (\frac {x}{2}\right )\right )\right )}-\frac {2 b^{3}}{\left (a -b \right )^{2} \left (a +b \right )^{2} \left (a +2 \tanh \left (\frac {x}{2}\right ) b +a \left (\tanh ^{2}\left (\frac {x}{2}\right )\right )\right )}-\frac {6 b^{2} a \arctan \left (\frac {2 a \tanh \left (\frac {x}{2}\right )+2 b}{2 \sqrt {a^{2}-b^{2}}}\right )}{\left (a -b \right )^{2} \left (a +b \right )^{2} \sqrt {a^{2}-b^{2}}}-\frac {1}{\left (a -b \right )^{2} \left (\tanh \left (\frac {x}{2}\right )+1\right )} \]
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 = 1.86, size = 255, normalized size = 1.92 \[ \frac {{\mathrm {e}}^x}{2\,{\left (a+b\right )}^2}-\frac {{\mathrm {e}}^{-x}}{2\,{\left (a-b\right )}^2}-\frac {6\,\mathrm {atan}\left (\frac {a\,b^2\,{\mathrm {e}}^x\,\sqrt {a^{10}-5\,a^8\,b^2+10\,a^6\,b^4-10\,a^4\,b^6+5\,a^2\,b^8-b^{10}}}{a^5\,\sqrt {a^2\,b^4}-b^5\,\sqrt {a^2\,b^4}+2\,a^2\,b^3\,\sqrt {a^2\,b^4}-2\,a^3\,b^2\,\sqrt {a^2\,b^4}+a\,b^4\,\sqrt {a^2\,b^4}-a^4\,b\,\sqrt {a^2\,b^4}}\right )\,\sqrt {a^2\,b^4}}{\sqrt {a^{10}-5\,a^8\,b^2+10\,a^6\,b^4-10\,a^4\,b^6+5\,a^2\,b^8-b^{10}}}-\frac {2\,b^3\,{\mathrm {e}}^x}{{\left (a+b\right )}^2\,{\left (a-b\right )}^2\,\left (a-b+{\mathrm {e}}^{2\,x}\,\left (a+b\right )\right )} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [F(-1)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Timed out} \]
Verification of antiderivative is not currently implemented for this CAS.
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