Optimal. Leaf size=22 \[ \frac {\tan ^{-1}\left (\sqrt {2} \tanh (3 x+2)\right )}{3 \sqrt {2}} \]
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Rubi [A] time = 0.02, antiderivative size = 22, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, integrand size = 14, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.214, Rules used = {12, 2659, 206} \[ \frac {\tan ^{-1}\left (\sqrt {2} \tanh (3 x+2)\right )}{3 \sqrt {2}} \]
Antiderivative was successfully verified.
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Rule 12
Rule 206
Rule 2659
Rubi steps
\begin {align*} \int \frac {2}{-1+3 \cosh (4+6 x)} \, dx &=2 \int \frac {1}{-1+3 \cosh (4+6 x)} \, dx\\ &=-\left (\frac {2}{3} i \operatorname {Subst}\left (\int \frac {1}{2-4 x^2} \, dx,x,\tan \left (\frac {1}{2} (4 i+6 i x)\right )\right )\right )\\ &=\frac {\tan ^{-1}\left (\sqrt {2} \tanh (2+3 x)\right )}{3 \sqrt {2}}\\ \end {align*}
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Mathematica [B] time = 0.08, size = 47, normalized size = 2.14 \[ \frac {\tan ^{-1}\left (\frac {\left (3+2 e^4+3 e^8\right ) \tanh (3 x)+3 \left (e^8-1\right )}{4 \sqrt {2} e^4}\right )}{3 \sqrt {2}} \]
Antiderivative was successfully verified.
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fricas [B] time = 0.41, size = 34, normalized size = 1.55 \[ \frac {1}{6} \, \sqrt {2} \arctan \left (\frac {3}{4} \, \sqrt {2} \cosh \left (6 \, x + 4\right ) + \frac {3}{4} \, \sqrt {2} \sinh \left (6 \, x + 4\right ) - \frac {1}{4} \, \sqrt {2}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.13, size = 21, normalized size = 0.95 \[ \frac {1}{6} \, \sqrt {2} \arctan \left (\frac {1}{4} \, \sqrt {2} {\left (3 \, e^{\left (6 \, x + 4\right )} - 1\right )}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.13, size = 17, normalized size = 0.77 \[ \frac {\arctan \left (\sqrt {2}\, \tanh \left (2+3 x \right )\right ) \sqrt {2}}{6} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.48, size = 21, normalized size = 0.95 \[ -\frac {1}{6} \, \sqrt {2} \arctan \left (\frac {1}{4} \, \sqrt {2} {\left (3 \, e^{\left (-6 \, x - 4\right )} - 1\right )}\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.12, size = 21, normalized size = 0.95 \[ \frac {\sqrt {2}\,\mathrm {atan}\left (\frac {\sqrt {2}\,\left (3\,{\mathrm {e}}^{6\,x+4}-1\right )}{4}\right )}{6} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.27, size = 19, normalized size = 0.86 \[ \frac {\sqrt {2} \operatorname {atan}{\left (\sqrt {2} \tanh {\left (3 x + 2 \right )} \right )}}{6} \]
Verification of antiderivative is not currently implemented for this CAS.
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