Optimal. Leaf size=85 \[ \frac{10 \sqrt{\cos (a+b x)} \sqrt{\sec (a+b x)} \text{EllipticF}\left (\frac{1}{2} (a+b x),2\right )}{21 b}+\frac{2 \sin (a+b x)}{7 b \sec ^{\frac{5}{2}}(a+b x)}+\frac{10 \sin (a+b x)}{21 b \sqrt{\sec (a+b x)}} \]
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Rubi [A] time = 0.0403677, antiderivative size = 85, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 3, integrand size = 10, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.3, Rules used = {3769, 3771, 2641} \[ \frac{2 \sin (a+b x)}{7 b \sec ^{\frac{5}{2}}(a+b x)}+\frac{10 \sin (a+b x)}{21 b \sqrt{\sec (a+b x)}}+\frac{10 \sqrt{\cos (a+b x)} \sqrt{\sec (a+b x)} F\left (\left .\frac{1}{2} (a+b x)\right |2\right )}{21 b} \]
Antiderivative was successfully verified.
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Rule 3769
Rule 3771
Rule 2641
Rubi steps
\begin{align*} \int \frac{1}{\sec ^{\frac{7}{2}}(a+b x)} \, dx &=\frac{2 \sin (a+b x)}{7 b \sec ^{\frac{5}{2}}(a+b x)}+\frac{5}{7} \int \frac{1}{\sec ^{\frac{3}{2}}(a+b x)} \, dx\\ &=\frac{2 \sin (a+b x)}{7 b \sec ^{\frac{5}{2}}(a+b x)}+\frac{10 \sin (a+b x)}{21 b \sqrt{\sec (a+b x)}}+\frac{5}{21} \int \sqrt{\sec (a+b x)} \, dx\\ &=\frac{2 \sin (a+b x)}{7 b \sec ^{\frac{5}{2}}(a+b x)}+\frac{10 \sin (a+b x)}{21 b \sqrt{\sec (a+b x)}}+\frac{1}{21} \left (5 \sqrt{\cos (a+b x)} \sqrt{\sec (a+b x)}\right ) \int \frac{1}{\sqrt{\cos (a+b x)}} \, dx\\ &=\frac{10 \sqrt{\cos (a+b x)} F\left (\left .\frac{1}{2} (a+b x)\right |2\right ) \sqrt{\sec (a+b x)}}{21 b}+\frac{2 \sin (a+b x)}{7 b \sec ^{\frac{5}{2}}(a+b x)}+\frac{10 \sin (a+b x)}{21 b \sqrt{\sec (a+b x)}}\\ \end{align*}
Mathematica [A] time = 0.0986761, size = 61, normalized size = 0.72 \[ \frac{\sqrt{\sec (a+b x)} \left (40 \sqrt{\cos (a+b x)} \text{EllipticF}\left (\frac{1}{2} (a+b x),2\right )+26 \sin (2 (a+b x))+3 \sin (4 (a+b x))\right )}{84 b} \]
Antiderivative was successfully verified.
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Maple [B] time = 1.247, size = 199, normalized size = 2.3 \begin{align*} -{\frac{2}{21\,b}\sqrt{ \left ( 2\, \left ( \cos \left ( 1/2\,bx+a/2 \right ) \right ) ^{2}-1 \right ) \left ( \sin \left ({\frac{bx}{2}}+{\frac{a}{2}} \right ) \right ) ^{2}} \left ( 48\, \left ( \cos \left ( 1/2\,bx+a/2 \right ) \right ) ^{9}-120\, \left ( \cos \left ( 1/2\,bx+a/2 \right ) \right ) ^{7}+128\, \left ( \cos \left ( 1/2\,bx+a/2 \right ) \right ) ^{5}-72\, \left ( \cos \left ( 1/2\,bx+a/2 \right ) \right ) ^{3}+5\,\sqrt{ \left ( \sin \left ( 1/2\,bx+a/2 \right ) \right ) ^{2}}\sqrt{-2\, \left ( \cos \left ( 1/2\,bx+a/2 \right ) \right ) ^{2}+1}{\it EllipticF} \left ( \cos \left ( 1/2\,bx+a/2 \right ) ,\sqrt{2} \right ) +16\,\cos \left ( 1/2\,bx+a/2 \right ) \right ){\frac{1}{\sqrt{-2\, \left ( \sin \left ( 1/2\,bx+a/2 \right ) \right ) ^{4}+ \left ( \sin \left ({\frac{bx}{2}}+{\frac{a}{2}} \right ) \right ) ^{2}}}} \left ( \sin \left ({\frac{bx}{2}}+{\frac{a}{2}} \right ) \right ) ^{-1}{\frac{1}{\sqrt{2\, \left ( \cos \left ( 1/2\,bx+a/2 \right ) \right ) ^{2}-1}}}} \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}{\sec \left (b x + 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{1}{\sec \left (b x + a\right )^{\frac{7}{2}}}, 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}{\sec \left (b x + a\right )^{\frac{7}{2}}}\,{d x} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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