Integrand size = 25, antiderivative size = 129 \[ \int \sqrt {d \sec (e+f x)} (a+b \tan (e+f x))^3 \, dx=\frac {2 a \left (a^2-2 b^2\right ) \operatorname {EllipticF}\left (\frac {1}{2} \arctan (\tan (e+f x)),2\right ) \sqrt {d \sec (e+f x)}}{f \sqrt [4]{\sec ^2(e+f x)}}+\frac {2 b \sqrt {d \sec (e+f x)} (a+b \tan (e+f x))^2}{5 f}+\frac {2 b \sqrt {d \sec (e+f x)} \left (2 \left (7 a^2-2 b^2\right )+3 a b \tan (e+f x)\right )}{5 f} \]
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Time = 0.13 (sec) , antiderivative size = 129, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.160, Rules used = {3593, 757, 794, 237} \[ \int \sqrt {d \sec (e+f x)} (a+b \tan (e+f x))^3 \, dx=\frac {2 a \left (a^2-2 b^2\right ) \sqrt {d \sec (e+f x)} \operatorname {EllipticF}\left (\frac {1}{2} \arctan (\tan (e+f x)),2\right )}{f \sqrt [4]{\sec ^2(e+f x)}}+\frac {2 b \sqrt {d \sec (e+f x)} \left (2 \left (7 a^2-2 b^2\right )+3 a b \tan (e+f x)\right )}{5 f}+\frac {2 b \sqrt {d \sec (e+f x)} (a+b \tan (e+f x))^2}{5 f} \]
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Rule 237
Rule 757
Rule 794
Rule 3593
Rubi steps \begin{align*} \text {integral}& = \frac {\sqrt {d \sec (e+f x)} \text {Subst}\left (\int \frac {(a+x)^3}{\left (1+\frac {x^2}{b^2}\right )^{3/4}} \, dx,x,b \tan (e+f x)\right )}{b f \sqrt [4]{\sec ^2(e+f x)}} \\ & = \frac {2 b \sqrt {d \sec (e+f x)} (a+b \tan (e+f x))^2}{5 f}+\frac {\left (2 b \sqrt {d \sec (e+f x)}\right ) \text {Subst}\left (\int \frac {(a+x) \left (\frac {1}{2} \left (-4+\frac {5 a^2}{b^2}\right )+\frac {9 a x}{2 b^2}\right )}{\left (1+\frac {x^2}{b^2}\right )^{3/4}} \, dx,x,b \tan (e+f x)\right )}{5 f \sqrt [4]{\sec ^2(e+f x)}} \\ & = \frac {2 b \sqrt {d \sec (e+f x)} (a+b \tan (e+f x))^2}{5 f}+\frac {2 b \sqrt {d \sec (e+f x)} \left (2 \left (7 a^2-2 b^2\right )+3 a b \tan (e+f x)\right )}{5 f}-\frac {\left (a \left (2-\frac {a^2}{b^2}\right ) b \sqrt {d \sec (e+f x)}\right ) \text {Subst}\left (\int \frac {1}{\left (1+\frac {x^2}{b^2}\right )^{3/4}} \, dx,x,b \tan (e+f x)\right )}{f \sqrt [4]{\sec ^2(e+f x)}} \\ & = \frac {2 a \left (a^2-2 b^2\right ) \operatorname {EllipticF}\left (\frac {1}{2} \arctan (\tan (e+f x)),2\right ) \sqrt {d \sec (e+f x)}}{f \sqrt [4]{\sec ^2(e+f x)}}+\frac {2 b \sqrt {d \sec (e+f x)} (a+b \tan (e+f x))^2}{5 f}+\frac {2 b \sqrt {d \sec (e+f x)} \left (2 \left (7 a^2-2 b^2\right )+3 a b \tan (e+f x)\right )}{5 f} \\ \end{align*}
Time = 3.91 (sec) , antiderivative size = 132, normalized size of antiderivative = 1.02 \[ \int \sqrt {d \sec (e+f x)} (a+b \tan (e+f x))^3 \, dx=-\frac {2 \sqrt {d \sec (e+f x)} \left (5 b \left (-3 a^2+b^2\right ) \cos ^3(e+f x)-5 a \left (a^2-2 b^2\right ) \cos ^{\frac {7}{2}}(e+f x) \operatorname {EllipticF}\left (\frac {1}{2} (e+f x),2\right )-\frac {1}{2} b^2 \cos (e+f x) (2 b+5 a \sin (2 (e+f x)))\right ) (a+b \tan (e+f x))^3}{5 f (a \cos (e+f x)+b \sin (e+f x))^3} \]
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Result contains complex when optimal does not.
Time = 21.26 (sec) , antiderivative size = 298, normalized size of antiderivative = 2.31
method | result | size |
default | \(\frac {2 \sqrt {d \sec \left (f x +e \right )}\, \left (-5 i \cos \left (f x +e \right ) \sqrt {\frac {1}{\cos \left (f x +e \right )+1}}\, \sqrt {\frac {\cos \left (f x +e \right )}{\cos \left (f x +e \right )+1}}\, F\left (i \left (\csc \left (f x +e \right )-\cot \left (f x +e \right )\right ), i\right ) a^{3}+10 i \cos \left (f x +e \right ) \sqrt {\frac {1}{\cos \left (f x +e \right )+1}}\, \sqrt {\frac {\cos \left (f x +e \right )}{\cos \left (f x +e \right )+1}}\, F\left (i \left (\csc \left (f x +e \right )-\cot \left (f x +e \right )\right ), i\right ) a \,b^{2}-5 i \sqrt {\frac {1}{\cos \left (f x +e \right )+1}}\, F\left (i \left (\csc \left (f x +e \right )-\cot \left (f x +e \right )\right ), i\right ) \sqrt {\frac {\cos \left (f x +e \right )}{\cos \left (f x +e \right )+1}}\, a^{3}+10 i \sqrt {\frac {1}{\cos \left (f x +e \right )+1}}\, F\left (i \left (\csc \left (f x +e \right )-\cot \left (f x +e \right )\right ), i\right ) \sqrt {\frac {\cos \left (f x +e \right )}{\cos \left (f x +e \right )+1}}\, a \,b^{2}+5 \tan \left (f x +e \right ) a \,b^{2}+15 a^{2} b -5 b^{3}+b^{3} \left (\sec ^{2}\left (f x +e \right )\right )\right )}{5 f}\) | \(298\) |
parts | \(-\frac {2 i a^{3} \left (\cos \left (f x +e \right )+1\right ) F\left (i \left (\csc \left (f x +e \right )-\cot \left (f x +e \right )\right ), i\right ) \sqrt {d \sec \left (f x +e \right )}\, \sqrt {\frac {1}{\cos \left (f x +e \right )+1}}\, \sqrt {\frac {\cos \left (f x +e \right )}{\cos \left (f x +e \right )+1}}}{f}-\frac {b^{3} \sqrt {d \sec \left (f x +e \right )}\, \left (20 \cos \left (f x +e \right ) \sqrt {-\frac {\cos \left (f x +e \right )}{\left (\cos \left (f x +e \right )+1\right )^{2}}}-5 \cos \left (f x +e \right ) \ln \left (\frac {2 \cos \left (f x +e \right ) \sqrt {-\frac {\cos \left (f x +e \right )}{\left (\cos \left (f x +e \right )+1\right )^{2}}}+2 \sqrt {-\frac {\cos \left (f x +e \right )}{\left (\cos \left (f x +e \right )+1\right )^{2}}}-\cos \left (f x +e \right )+1}{\cos \left (f x +e \right )+1}\right )+5 \cos \left (f x +e \right ) \ln \left (\frac {4 \cos \left (f x +e \right ) \sqrt {-\frac {\cos \left (f x +e \right )}{\left (\cos \left (f x +e \right )+1\right )^{2}}}+4 \sqrt {-\frac {\cos \left (f x +e \right )}{\left (\cos \left (f x +e \right )+1\right )^{2}}}-2 \cos \left (f x +e \right )+2}{\cos \left (f x +e \right )+1}\right )+20 \sqrt {-\frac {\cos \left (f x +e \right )}{\left (\cos \left (f x +e \right )+1\right )^{2}}}-4 \sec \left (f x +e \right ) \sqrt {-\frac {\cos \left (f x +e \right )}{\left (\cos \left (f x +e \right )+1\right )^{2}}}-4 \left (\sec ^{2}\left (f x +e \right )\right ) \sqrt {-\frac {\cos \left (f x +e \right )}{\left (\cos \left (f x +e \right )+1\right )^{2}}}\right )}{10 f \sqrt {-\frac {\cos \left (f x +e \right )}{\left (\cos \left (f x +e \right )+1\right )^{2}}}\, \left (\cos \left (f x +e \right )+1\right )}+\frac {6 a^{2} b \sqrt {d \sec \left (f x +e \right )}}{f}+\frac {2 a \,b^{2} \sqrt {d \sec \left (f x +e \right )}\, \left (2 i \cos \left (f x +e \right ) F\left (i \left (\csc \left (f x +e \right )-\cot \left (f x +e \right )\right ), i\right ) \sqrt {\frac {1}{\cos \left (f x +e \right )+1}}\, \sqrt {\frac {\cos \left (f x +e \right )}{\cos \left (f x +e \right )+1}}+2 i \sqrt {\frac {\cos \left (f x +e \right )}{\cos \left (f x +e \right )+1}}\, F\left (i \left (\csc \left (f x +e \right )-\cot \left (f x +e \right )\right ), i\right ) \sqrt {\frac {1}{\cos \left (f x +e \right )+1}}+\tan \left (f x +e \right )\right )}{f}\) | \(560\) |
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Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 0.10 (sec) , antiderivative size = 164, normalized size of antiderivative = 1.27 \[ \int \sqrt {d \sec (e+f x)} (a+b \tan (e+f x))^3 \, dx=-\frac {5 \, \sqrt {2} {\left (i \, a^{3} - 2 i \, a b^{2}\right )} \sqrt {d} \cos \left (f x + e\right )^{2} {\rm weierstrassPInverse}\left (-4, 0, \cos \left (f x + e\right ) + i \, \sin \left (f x + e\right )\right ) + 5 \, \sqrt {2} {\left (-i \, a^{3} + 2 i \, a b^{2}\right )} \sqrt {d} \cos \left (f x + e\right )^{2} {\rm weierstrassPInverse}\left (-4, 0, \cos \left (f x + e\right ) - i \, \sin \left (f x + e\right )\right ) - 2 \, {\left (5 \, a b^{2} \cos \left (f x + e\right ) \sin \left (f x + e\right ) + b^{3} + 5 \, {\left (3 \, a^{2} b - b^{3}\right )} \cos \left (f x + e\right )^{2}\right )} \sqrt {\frac {d}{\cos \left (f x + e\right )}}}{5 \, f \cos \left (f x + e\right )^{2}} \]
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\[ \int \sqrt {d \sec (e+f x)} (a+b \tan (e+f x))^3 \, dx=\int \sqrt {d \sec {\left (e + f x \right )}} \left (a + b \tan {\left (e + f x \right )}\right )^{3}\, dx \]
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\[ \int \sqrt {d \sec (e+f x)} (a+b \tan (e+f x))^3 \, dx=\int { \sqrt {d \sec \left (f x + e\right )} {\left (b \tan \left (f x + e\right ) + a\right )}^{3} \,d x } \]
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\[ \int \sqrt {d \sec (e+f x)} (a+b \tan (e+f x))^3 \, dx=\int { \sqrt {d \sec \left (f x + e\right )} {\left (b \tan \left (f x + e\right ) + a\right )}^{3} \,d x } \]
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Timed out. \[ \int \sqrt {d \sec (e+f x)} (a+b \tan (e+f x))^3 \, dx=\int \sqrt {\frac {d}{\cos \left (e+f\,x\right )}}\,{\left (a+b\,\mathrm {tan}\left (e+f\,x\right )\right )}^3 \,d x \]
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