Optimal. Leaf size=39 \[ \frac {2 \sin ^{-1}\left (\sqrt {\frac {5}{2}} \sin (x)\right )}{5 \sqrt {5}}+\frac {\sin (x)}{10 \sqrt {2-5 \sin ^2(x)}} \]
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Rubi [A]
time = 0.05, antiderivative size = 39, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 3, integrand size = 19, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.158, Rules used = {4441, 393, 222}
\begin {gather*} \frac {2 \text {ArcSin}\left (\sqrt {\frac {5}{2}} \sin (x)\right )}{5 \sqrt {5}}+\frac {\sin (x)}{10 \sqrt {2-5 \sin ^2(x)}} \end {gather*}
Antiderivative was successfully verified.
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Rule 222
Rule 393
Rule 4441
Rubi steps
\begin {align*} \int \frac {\cos (x) \cos (2 x)}{\left (2-5 \sin ^2(x)\right )^{3/2}} \, dx &=\text {Subst}\left (\int \frac {1-2 x^2}{\left (2-5 x^2\right )^{3/2}} \, dx,x,\sin (x)\right )\\ &=\frac {\sin (x)}{10 \sqrt {2-5 \sin ^2(x)}}+\frac {2}{5} \text {Subst}\left (\int \frac {1}{\sqrt {2-5 x^2}} \, dx,x,\sin (x)\right )\\ &=\frac {2 \sin ^{-1}\left (\sqrt {\frac {5}{2}} \sin (x)\right )}{5 \sqrt {5}}+\frac {\sin (x)}{10 \sqrt {2-5 \sin ^2(x)}}\\ \end {align*}
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Mathematica [A]
time = 0.07, size = 39, normalized size = 1.00 \begin {gather*} \frac {1}{50} \left (4 \sqrt {5} \sin ^{-1}\left (\sqrt {\frac {5}{2}} \sin (x)\right )+\frac {5 \sin (x)}{\sqrt {2-5 \sin ^2(x)}}\right ) \end {gather*}
Antiderivative was successfully verified.
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Maple [B] Leaf count of result is larger than twice the leaf count of optimal. \(57\) vs.
\(2(28)=56\).
time = 0.18, size = 58, normalized size = 1.49
method | result | size |
default | \(\frac {20 \arcsin \left (\frac {\sin \left (x \right ) \sqrt {10}}{2}\right ) \sqrt {5}\, \left (\cos ^{2}\left (x \right )\right )+5 \sin \left (x \right ) \sqrt {5 \left (\cos ^{2}\left (x \right )\right )-3}-12 \arcsin \left (\frac {\sin \left (x \right ) \sqrt {10}}{2}\right ) \sqrt {5}}{250 \left (\cos ^{2}\left (x \right )\right )-150}\) | \(58\) |
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [B] Leaf count of result is larger than twice the leaf count of optimal. 716 vs.
\(2 (28) = 56\).
time = 1.40, size = 716, normalized size = 18.36 \begin {gather*} \frac {5 \, \cos \left (\frac {1}{2} \, \arctan \left (5 \, \sin \left (4 \, x\right ) - 2 \, \sin \left (2 \, x\right ), 5 \, \cos \left (4 \, x\right ) - 2 \, \cos \left (2 \, x\right ) + 5\right )\right ) \sin \left (2 \, x\right ) - 5 \, {\left (\cos \left (2 \, x\right ) - 1\right )} \sin \left (\frac {1}{2} \, \arctan \left (5 \, \sin \left (4 \, x\right ) - 2 \, \sin \left (2 \, x\right ), 5 \, \cos \left (4 \, x\right ) - 2 \, \cos \left (2 \, x\right ) + 5\right )\right ) + 2 \, {\left (-10 \, {\left (2 \, \cos \left (2 \, x\right ) - 5\right )} \cos \left (4 \, x\right ) + 25 \, \cos \left (4 \, x\right )^{2} + 4 \, \cos \left (2 \, x\right )^{2} + 25 \, \sin \left (4 \, x\right )^{2} - 20 \, \sin \left (4 \, x\right ) \sin \left (2 \, x\right ) + 4 \, \sin \left (2 \, x\right )^{2} - 20 \, \cos \left (2 \, x\right ) + 25\right )}^{\frac {1}{4}} {\left (\sqrt {5} \arctan \left (\frac {1}{12} \, \sqrt {6} {\left (\sqrt {6} \left (\frac {25}{36}\right )^{\frac {1}{4}} {\left (25 \, \cos \left (2 \, x\right )^{4} + 25 \, \sin \left (2 \, x\right )^{4} - 20 \, \cos \left (2 \, x\right )^{3} + 2 \, {\left (25 \, \cos \left (2 \, x\right )^{2} - 10 \, \cos \left (2 \, x\right ) - 23\right )} \sin \left (2 \, x\right )^{2} + 54 \, \cos \left (2 \, x\right )^{2} - 20 \, \cos \left (2 \, x\right ) + 25\right )}^{\frac {1}{4}} \sin \left (\frac {1}{2} \, \arctan \left (\frac {5}{12} \, {\left (5 \, \cos \left (2 \, x\right ) - 1\right )} \sin \left (2 \, x\right ), \frac {25}{24} \, \cos \left (2 \, x\right )^{2} - \frac {25}{24} \, \sin \left (2 \, x\right )^{2} - \frac {5}{12} \, \cos \left (2 \, x\right ) + \frac {25}{24}\right )\right ) + 5 \, \sin \left (2 \, x\right )\right )}, \frac {5}{12} \, \sqrt {6} \cos \left (2 \, x\right ) + \frac {1}{2} \, \left (\frac {25}{36}\right )^{\frac {1}{4}} {\left (25 \, \cos \left (2 \, x\right )^{4} + 25 \, \sin \left (2 \, x\right )^{4} - 20 \, \cos \left (2 \, x\right )^{3} + 2 \, {\left (25 \, \cos \left (2 \, x\right )^{2} - 10 \, \cos \left (2 \, x\right ) - 23\right )} \sin \left (2 \, x\right )^{2} + 54 \, \cos \left (2 \, x\right )^{2} - 20 \, \cos \left (2 \, x\right ) + 25\right )}^{\frac {1}{4}} \cos \left (\frac {1}{2} \, \arctan \left (\frac {5}{12} \, {\left (5 \, \cos \left (2 \, x\right ) - 1\right )} \sin \left (2 \, x\right ), \frac {25}{24} \, \cos \left (2 \, x\right )^{2} - \frac {25}{24} \, \sin \left (2 \, x\right )^{2} - \frac {5}{12} \, \cos \left (2 \, x\right ) + \frac {25}{24}\right )\right ) - \frac {1}{12} \, \sqrt {6}\right ) + \sqrt {5} \arctan \left (\frac {1}{12} \, \sqrt {6} {\left (\sqrt {6} \left (\frac {1}{36}\right )^{\frac {1}{4}} {\left (\cos \left (2 \, x\right )^{4} + \sin \left (2 \, x\right )^{4} - 20 \, \cos \left (2 \, x\right )^{3} + 2 \, {\left (\cos \left (2 \, x\right )^{2} - 10 \, \cos \left (2 \, x\right ) + 1\right )} \sin \left (2 \, x\right )^{2} + 198 \, \cos \left (2 \, x\right )^{2} - 980 \, \cos \left (2 \, x\right ) + 2401\right )}^{\frac {1}{4}} \sin \left (\frac {1}{2} \, \arctan \left (\frac {1}{12} \, {\left (\cos \left (2 \, x\right ) - 5\right )} \sin \left (2 \, x\right ), \frac {1}{24} \, \cos \left (2 \, x\right )^{2} - \frac {1}{24} \, \sin \left (2 \, x\right )^{2} - \frac {5}{12} \, \cos \left (2 \, x\right ) + \frac {49}{24}\right )\right ) + \sin \left (2 \, x\right )\right )}, \frac {1}{12} \, \sqrt {6} \cos \left (2 \, x\right ) + \frac {1}{2} \, \left (\frac {1}{36}\right )^{\frac {1}{4}} {\left (\cos \left (2 \, x\right )^{4} + \sin \left (2 \, x\right )^{4} - 20 \, \cos \left (2 \, x\right )^{3} + 2 \, {\left (\cos \left (2 \, x\right )^{2} - 10 \, \cos \left (2 \, x\right ) + 1\right )} \sin \left (2 \, x\right )^{2} + 198 \, \cos \left (2 \, x\right )^{2} - 980 \, \cos \left (2 \, x\right ) + 2401\right )}^{\frac {1}{4}} \cos \left (\frac {1}{2} \, \arctan \left (\frac {1}{12} \, {\left (\cos \left (2 \, x\right ) - 5\right )} \sin \left (2 \, x\right ), \frac {1}{24} \, \cos \left (2 \, x\right )^{2} - \frac {1}{24} \, \sin \left (2 \, x\right )^{2} - \frac {5}{12} \, \cos \left (2 \, x\right ) + \frac {49}{24}\right )\right ) - \frac {5}{12} \, \sqrt {6}\right )\right )}}{50 \, {\left (-10 \, {\left (2 \, \cos \left (2 \, x\right ) - 5\right )} \cos \left (4 \, x\right ) + 25 \, \cos \left (4 \, x\right )^{2} + 4 \, \cos \left (2 \, x\right )^{2} + 25 \, \sin \left (4 \, x\right )^{2} - 20 \, \sin \left (4 \, x\right ) \sin \left (2 \, x\right ) + 4 \, \sin \left (2 \, x\right )^{2} - 20 \, \cos \left (2 \, x\right ) + 25\right )}^{\frac {1}{4}}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [B] Leaf count of result is larger than twice the leaf count of optimal. 100 vs.
\(2 (28) = 56\).
time = 1.47, size = 100, normalized size = 2.56 \begin {gather*} -\frac {{\left (5 \, \sqrt {5} \cos \left (x\right )^{2} - 3 \, \sqrt {5}\right )} \arctan \left (\frac {{\left (50 \, \sqrt {5} \cos \left (x\right )^{4} - 80 \, \sqrt {5} \cos \left (x\right )^{2} + 31 \, \sqrt {5}\right )} \sqrt {5 \, \cos \left (x\right )^{2} - 3}}{10 \, {\left (25 \, \cos \left (x\right )^{4} - 35 \, \cos \left (x\right )^{2} + 12\right )} \sin \left (x\right )}\right ) - 5 \, \sqrt {5 \, \cos \left (x\right )^{2} - 3} \sin \left (x\right )}{50 \, {\left (5 \, \cos \left (x\right )^{2} - 3\right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F(-2)]
time = 0.00, size = 0, normalized size = 0.00 \begin {gather*} \text {Exception raised: SystemError} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A]
time = 1.04, size = 38, normalized size = 0.97 \begin {gather*} \frac {2}{25} \, \sqrt {5} \arcsin \left (\frac {1}{2} \, \sqrt {10} \sin \left (x\right )\right ) - \frac {\sqrt {-5 \, \sin \left (x\right )^{2} + 2} \sin \left (x\right )}{10 \, {\left (5 \, \sin \left (x\right )^{2} - 2\right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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Mupad [F]
time = 0.00, size = -1, normalized size = -0.03 \begin {gather*} \int \frac {\cos \left (2\,x\right )\,\cos \left (x\right )}{{\left (2-5\,{\sin \left (x\right )}^2\right )}^{3/2}} \,d x \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
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