Optimal. Leaf size=64 \[ \frac{4 i \text{EllipticF}\left (\frac{1}{2} i (a+b x),2\right )}{9 b^2}-\frac{4 \sinh (a+b x) \sqrt{\cosh (a+b x)}}{9 b^2}+\frac{2 x \cosh ^{\frac{3}{2}}(a+b x)}{3 b} \]
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Rubi [A] time = 0.0422691, antiderivative size = 64, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 3, integrand size = 18, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.167, Rules used = {5373, 2635, 2641} \[ \frac{4 i F\left (\left .\frac{1}{2} i (a+b x)\right |2\right )}{9 b^2}-\frac{4 \sinh (a+b x) \sqrt{\cosh (a+b x)}}{9 b^2}+\frac{2 x \cosh ^{\frac{3}{2}}(a+b x)}{3 b} \]
Antiderivative was successfully verified.
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Rule 5373
Rule 2635
Rule 2641
Rubi steps
\begin{align*} \int x \sqrt{\cosh (a+b x)} \sinh (a+b x) \, dx &=\frac{2 x \cosh ^{\frac{3}{2}}(a+b x)}{3 b}-\frac{2 \int \cosh ^{\frac{3}{2}}(a+b x) \, dx}{3 b}\\ &=\frac{2 x \cosh ^{\frac{3}{2}}(a+b x)}{3 b}-\frac{4 \sqrt{\cosh (a+b x)} \sinh (a+b x)}{9 b^2}-\frac{2 \int \frac{1}{\sqrt{\cosh (a+b x)}} \, dx}{9 b}\\ &=\frac{2 x \cosh ^{\frac{3}{2}}(a+b x)}{3 b}+\frac{4 i F\left (\left .\frac{1}{2} i (a+b x)\right |2\right )}{9 b^2}-\frac{4 \sqrt{\cosh (a+b x)} \sinh (a+b x)}{9 b^2}\\ \end{align*}
Mathematica [A] time = 0.159411, size = 56, normalized size = 0.88 \[ \frac{2 \sqrt{\cosh (a+b x)} (3 b x \cosh (a+b x)-2 \sinh (a+b x))+4 i \text{EllipticF}\left (\frac{1}{2} i (a+b x),2\right )}{9 b^2} \]
Antiderivative was successfully verified.
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Maple [F] time = 0.03, size = 0, normalized size = 0. \begin{align*} \int x\sinh \left ( bx+a \right ) \sqrt{\cosh \left ( bx+a \right ) }\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int x \sqrt{\cosh \left (b x + a\right )} \sinh \left (b x + a\right )\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: UnboundLocalError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F(-1)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Timed out} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int x \sqrt{\cosh \left (b x + a\right )} \sinh \left (b x + a\right )\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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