Integrand size = 12, antiderivative size = 68 \[ \int \left (4-5 \sec ^2(x)\right )^{3/2} \, dx=8 \arctan \left (\frac {2 \tan (x)}{\sqrt {-1-5 \tan ^2(x)}}\right )-\frac {7}{2} \sqrt {5} \arctan \left (\frac {\sqrt {5} \tan (x)}{\sqrt {-1-5 \tan ^2(x)}}\right )-\frac {5}{2} \tan (x) \sqrt {-1-5 \tan ^2(x)} \]
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Time = 0.04 (sec) , antiderivative size = 68, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.500, Rules used = {4213, 427, 537, 223, 209, 385} \[ \int \left (4-5 \sec ^2(x)\right )^{3/2} \, dx=8 \arctan \left (\frac {2 \tan (x)}{\sqrt {-5 \tan ^2(x)-1}}\right )-\frac {7}{2} \sqrt {5} \arctan \left (\frac {\sqrt {5} \tan (x)}{\sqrt {-5 \tan ^2(x)-1}}\right )-\frac {5}{2} \tan (x) \sqrt {-5 \tan ^2(x)-1} \]
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Rule 209
Rule 223
Rule 385
Rule 427
Rule 537
Rule 4213
Rubi steps \begin{align*} \text {integral}& = \text {Subst}\left (\int \frac {\left (-1-5 x^2\right )^{3/2}}{1+x^2} \, dx,x,\tan (x)\right ) \\ & = -\frac {5}{2} \tan (x) \sqrt {-1-5 \tan ^2(x)}+\frac {1}{2} \text {Subst}\left (\int \frac {-3-35 x^2}{\sqrt {-1-5 x^2} \left (1+x^2\right )} \, dx,x,\tan (x)\right ) \\ & = -\frac {5}{2} \tan (x) \sqrt {-1-5 \tan ^2(x)}+16 \text {Subst}\left (\int \frac {1}{\sqrt {-1-5 x^2} \left (1+x^2\right )} \, dx,x,\tan (x)\right )-\frac {35}{2} \text {Subst}\left (\int \frac {1}{\sqrt {-1-5 x^2}} \, dx,x,\tan (x)\right ) \\ & = -\frac {5}{2} \tan (x) \sqrt {-1-5 \tan ^2(x)}+16 \text {Subst}\left (\int \frac {1}{1+4 x^2} \, dx,x,\frac {\tan (x)}{\sqrt {-1-5 \tan ^2(x)}}\right )-\frac {35}{2} \text {Subst}\left (\int \frac {1}{1+5 x^2} \, dx,x,\frac {\tan (x)}{\sqrt {-1-5 \tan ^2(x)}}\right ) \\ & = 8 \arctan \left (\frac {2 \tan (x)}{\sqrt {-1-5 \tan ^2(x)}}\right )-\frac {7}{2} \sqrt {5} \arctan \left (\frac {\sqrt {5} \tan (x)}{\sqrt {-1-5 \tan ^2(x)}}\right )-\frac {5}{2} \tan (x) \sqrt {-1-5 \tan ^2(x)} \\ \end{align*}
Result contains complex when optimal does not.
Time = 0.27 (sec) , antiderivative size = 115, normalized size of antiderivative = 1.69 \[ \int \left (4-5 \sec ^2(x)\right )^{3/2} \, dx=-\frac {\left (-5+4 \cos ^2(x)\right ) \sec (x) \sqrt {4-5 \sec ^2(x)} \left (7 \sqrt {5} \arctan \left (\frac {\sqrt {5} \sin (x)}{\sqrt {-3+2 \cos (2 x)}}\right ) \cos ^2(x)+16 i \cos ^2(x) \log \left (\sqrt {-3+2 \cos (2 x)}+2 i \sin (x)\right )+5 \sqrt {-3+2 \cos (2 x)} \sin (x)\right )}{2 (-3+2 \cos (2 x))^{3/2}} \]
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Leaf count of result is larger than twice the leaf count of optimal. \(216\) vs. \(2(54)=108\).
Time = 7.20 (sec) , antiderivative size = 217, normalized size of antiderivative = 3.19
method | result | size |
default | \(-\frac {{\left (4-5 \left (\sec ^{2}\left (x \right )\right )\right )}^{\frac {3}{2}} \left (7 \left (\cos ^{3}\left (x \right )\right ) \sqrt {5}\, \arctan \left (\frac {\left (4 \sin \left (x \right )-1\right ) \sqrt {5}}{5 \left (\cos \left (x \right )+1\right ) \sqrt {\frac {4 \left (\cos ^{2}\left (x \right )\right )-5}{\left (\cos \left (x \right )+1\right )^{2}}}}\right )+7 \left (\cos ^{3}\left (x \right )\right ) \sqrt {5}\, \arctan \left (\frac {\left (4 \sin \left (x \right )+1\right ) \sqrt {5}}{5 \left (\cos \left (x \right )+1\right ) \sqrt {\frac {4 \left (\cos ^{2}\left (x \right )\right )-5}{\left (\cos \left (x \right )+1\right )^{2}}}}\right )-32 \left (\cos ^{3}\left (x \right )\right ) \arctan \left (\frac {2 \sin \left (x \right )}{\left (\cos \left (x \right )+1\right ) \sqrt {\frac {4 \left (\cos ^{2}\left (x \right )\right )-5}{\left (\cos \left (x \right )+1\right )^{2}}}}\right )+10 \left (\cos ^{2}\left (x \right )\right ) \sin \left (x \right ) \sqrt {\frac {4 \left (\cos ^{2}\left (x \right )\right )-5}{\left (\cos \left (x \right )+1\right )^{2}}}+10 \cos \left (x \right ) \sin \left (x \right ) \sqrt {\frac {4 \left (\cos ^{2}\left (x \right )\right )-5}{\left (\cos \left (x \right )+1\right )^{2}}}\right )}{4 \left (4 \left (\cos ^{2}\left (x \right )\right )-5\right ) \sqrt {\frac {4 \left (\cos ^{2}\left (x \right )\right )-5}{\left (\cos \left (x \right )+1\right )^{2}}}\, \left (\cos \left (x \right )+1\right )}\) | \(217\) |
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Leaf count of result is larger than twice the leaf count of optimal. 130 vs. \(2 (54) = 108\).
Time = 0.27 (sec) , antiderivative size = 130, normalized size of antiderivative = 1.91 \[ \int \left (4-5 \sec ^2(x)\right )^{3/2} \, dx=\frac {7 \, \sqrt {5} \arctan \left (\frac {\sqrt {5} \sqrt {\frac {4 \, \cos \left (x\right )^{2} - 5}{\cos \left (x\right )^{2}}} \cos \left (x\right )}{5 \, \sin \left (x\right )}\right ) \cos \left (x\right ) + 8 \, \arctan \left (\frac {4 \, {\left (8 \, \cos \left (x\right )^{3} - 9 \, \cos \left (x\right )\right )} \sqrt {\frac {4 \, \cos \left (x\right )^{2} - 5}{\cos \left (x\right )^{2}}} \sin \left (x\right ) + \cos \left (x\right ) \sin \left (x\right )}{64 \, \cos \left (x\right )^{4} - 143 \, \cos \left (x\right )^{2} + 80}\right ) \cos \left (x\right ) - 8 \, \arctan \left (\frac {\sin \left (x\right )}{\cos \left (x\right )}\right ) \cos \left (x\right ) - 5 \, \sqrt {\frac {4 \, \cos \left (x\right )^{2} - 5}{\cos \left (x\right )^{2}}} \sin \left (x\right )}{2 \, \cos \left (x\right )} \]
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\[ \int \left (4-5 \sec ^2(x)\right )^{3/2} \, dx=\int \left (4 - 5 \sec ^{2}{\left (x \right )}\right )^{\frac {3}{2}}\, dx \]
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\[ \int \left (4-5 \sec ^2(x)\right )^{3/2} \, dx=\int { {\left (-5 \, \sec \left (x\right )^{2} + 4\right )}^{\frac {3}{2}} \,d x } \]
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\[ \int \left (4-5 \sec ^2(x)\right )^{3/2} \, dx=\int { {\left (-5 \, \sec \left (x\right )^{2} + 4\right )}^{\frac {3}{2}} \,d x } \]
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Timed out. \[ \int \left (4-5 \sec ^2(x)\right )^{3/2} \, dx=\int {\left (4-\frac {5}{{\cos \left (x\right )}^2}\right )}^{3/2} \,d x \]
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