Optimal. Leaf size=227 \[ \frac{16 i a \sqrt{\frac{a+b \cosh (x)}{a+b}} \text{EllipticF}\left (\frac{i x}{2},\frac{2 b}{a+b}\right )}{15 \left (a^2-b^2\right )^2 \sqrt{a+b \cosh (x)}}-\frac{2 b \left (23 a^2+9 b^2\right ) \sinh (x)}{15 \left (a^2-b^2\right )^3 \sqrt{a+b \cosh (x)}}-\frac{16 a b \sinh (x)}{15 \left (a^2-b^2\right )^2 (a+b \cosh (x))^{3/2}}-\frac{2 b \sinh (x)}{5 \left (a^2-b^2\right ) (a+b \cosh (x))^{5/2}}-\frac{2 i \left (23 a^2+9 b^2\right ) \sqrt{a+b \cosh (x)} E\left (\frac{i x}{2}|\frac{2 b}{a+b}\right )}{15 \left (a^2-b^2\right )^3 \sqrt{\frac{a+b \cosh (x)}{a+b}}} \]
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Rubi [A] time = 0.312871, antiderivative size = 227, normalized size of antiderivative = 1., number of steps used = 8, number of rules used = 7, integrand size = 10, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.7, Rules used = {2664, 2754, 2752, 2663, 2661, 2655, 2653} \[ -\frac{2 b \left (23 a^2+9 b^2\right ) \sinh (x)}{15 \left (a^2-b^2\right )^3 \sqrt{a+b \cosh (x)}}-\frac{16 a b \sinh (x)}{15 \left (a^2-b^2\right )^2 (a+b \cosh (x))^{3/2}}-\frac{2 b \sinh (x)}{5 \left (a^2-b^2\right ) (a+b \cosh (x))^{5/2}}+\frac{16 i a \sqrt{\frac{a+b \cosh (x)}{a+b}} F\left (\frac{i x}{2}|\frac{2 b}{a+b}\right )}{15 \left (a^2-b^2\right )^2 \sqrt{a+b \cosh (x)}}-\frac{2 i \left (23 a^2+9 b^2\right ) \sqrt{a+b \cosh (x)} E\left (\frac{i x}{2}|\frac{2 b}{a+b}\right )}{15 \left (a^2-b^2\right )^3 \sqrt{\frac{a+b \cosh (x)}{a+b}}} \]
Antiderivative was successfully verified.
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Rule 2664
Rule 2754
Rule 2752
Rule 2663
Rule 2661
Rule 2655
Rule 2653
Rubi steps
\begin{align*} \int \frac{1}{(a+b \cosh (x))^{7/2}} \, dx &=-\frac{2 b \sinh (x)}{5 \left (a^2-b^2\right ) (a+b \cosh (x))^{5/2}}-\frac{2 \int \frac{-\frac{5 a}{2}+\frac{3}{2} b \cosh (x)}{(a+b \cosh (x))^{5/2}} \, dx}{5 \left (a^2-b^2\right )}\\ &=-\frac{2 b \sinh (x)}{5 \left (a^2-b^2\right ) (a+b \cosh (x))^{5/2}}-\frac{16 a b \sinh (x)}{15 \left (a^2-b^2\right )^2 (a+b \cosh (x))^{3/2}}+\frac{4 \int \frac{\frac{3}{4} \left (5 a^2+3 b^2\right )-2 a b \cosh (x)}{(a+b \cosh (x))^{3/2}} \, dx}{15 \left (a^2-b^2\right )^2}\\ &=-\frac{2 b \sinh (x)}{5 \left (a^2-b^2\right ) (a+b \cosh (x))^{5/2}}-\frac{16 a b \sinh (x)}{15 \left (a^2-b^2\right )^2 (a+b \cosh (x))^{3/2}}-\frac{2 b \left (23 a^2+9 b^2\right ) \sinh (x)}{15 \left (a^2-b^2\right )^3 \sqrt{a+b \cosh (x)}}-\frac{8 \int \frac{-\frac{1}{8} a \left (15 a^2+17 b^2\right )-\frac{1}{8} b \left (23 a^2+9 b^2\right ) \cosh (x)}{\sqrt{a+b \cosh (x)}} \, dx}{15 \left (a^2-b^2\right )^3}\\ &=-\frac{2 b \sinh (x)}{5 \left (a^2-b^2\right ) (a+b \cosh (x))^{5/2}}-\frac{16 a b \sinh (x)}{15 \left (a^2-b^2\right )^2 (a+b \cosh (x))^{3/2}}-\frac{2 b \left (23 a^2+9 b^2\right ) \sinh (x)}{15 \left (a^2-b^2\right )^3 \sqrt{a+b \cosh (x)}}-\frac{(8 a) \int \frac{1}{\sqrt{a+b \cosh (x)}} \, dx}{15 \left (a^2-b^2\right )^2}+\frac{\left (23 a^2+9 b^2\right ) \int \sqrt{a+b \cosh (x)} \, dx}{15 \left (a^2-b^2\right )^3}\\ &=-\frac{2 b \sinh (x)}{5 \left (a^2-b^2\right ) (a+b \cosh (x))^{5/2}}-\frac{16 a b \sinh (x)}{15 \left (a^2-b^2\right )^2 (a+b \cosh (x))^{3/2}}-\frac{2 b \left (23 a^2+9 b^2\right ) \sinh (x)}{15 \left (a^2-b^2\right )^3 \sqrt{a+b \cosh (x)}}+\frac{\left (\left (23 a^2+9 b^2\right ) \sqrt{a+b \cosh (x)}\right ) \int \sqrt{\frac{a}{a+b}+\frac{b \cosh (x)}{a+b}} \, dx}{15 \left (a^2-b^2\right )^3 \sqrt{\frac{a+b \cosh (x)}{a+b}}}-\frac{\left (8 a \sqrt{\frac{a+b \cosh (x)}{a+b}}\right ) \int \frac{1}{\sqrt{\frac{a}{a+b}+\frac{b \cosh (x)}{a+b}}} \, dx}{15 \left (a^2-b^2\right )^2 \sqrt{a+b \cosh (x)}}\\ &=-\frac{2 i \left (23 a^2+9 b^2\right ) \sqrt{a+b \cosh (x)} E\left (\frac{i x}{2}|\frac{2 b}{a+b}\right )}{15 \left (a^2-b^2\right )^3 \sqrt{\frac{a+b \cosh (x)}{a+b}}}+\frac{16 i a \sqrt{\frac{a+b \cosh (x)}{a+b}} F\left (\frac{i x}{2}|\frac{2 b}{a+b}\right )}{15 \left (a^2-b^2\right )^2 \sqrt{a+b \cosh (x)}}-\frac{2 b \sinh (x)}{5 \left (a^2-b^2\right ) (a+b \cosh (x))^{5/2}}-\frac{16 a b \sinh (x)}{15 \left (a^2-b^2\right )^2 (a+b \cosh (x))^{3/2}}-\frac{2 b \left (23 a^2+9 b^2\right ) \sinh (x)}{15 \left (a^2-b^2\right )^3 \sqrt{a+b \cosh (x)}}\\ \end{align*}
Mathematica [A] time = 0.65554, size = 165, normalized size = 0.73 \[ \frac{2 \left (\frac{b \sinh (x) \left (b^2 \left (23 a^2+9 b^2\right ) \cosh ^2(x)+2 a b \left (27 a^2+5 b^2\right ) \cosh (x)-5 a^2 b^2+34 a^4+3 b^4\right )}{\left (b^2-a^2\right )^3}-\frac{i \left (\frac{a+b \cosh (x)}{a+b}\right )^{5/2} \left (8 a (b-a) \text{EllipticF}\left (\frac{i x}{2},\frac{2 b}{a+b}\right )+\left (23 a^2+9 b^2\right ) E\left (\frac{i x}{2}|\frac{2 b}{a+b}\right )\right )}{(a-b)^3}\right )}{15 (a+b \cosh (x))^{5/2}} \]
Antiderivative was successfully verified.
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Maple [B] time = 0.198, size = 566, normalized size = 2.5 \begin{align*} \text{result too large to display} \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 \frac{1}{{\left (b \cosh \left (x\right ) + a\right )}^{\frac{7}{2}}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [F] time = 0., size = 0, normalized size = 0. \begin{align*}{\rm integral}\left (\frac{\sqrt{b \cosh \left (x\right ) + a}}{b^{4} \cosh \left (x\right )^{4} + 4 \, a b^{3} \cosh \left (x\right )^{3} + 6 \, a^{2} b^{2} \cosh \left (x\right )^{2} + 4 \, a^{3} b \cosh \left (x\right ) + a^{4}}, x\right ) \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 \frac{1}{{\left (b \cosh \left (x\right ) + a\right )}^{\frac{7}{2}}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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