Integrand size = 21, antiderivative size = 197 \[ \int \frac {1}{(a \cos (c+d x)+b \sin (c+d x))^{7/2}} \, dx=-\frac {2 (b \cos (c+d x)-a \sin (c+d x))}{5 \left (a^2+b^2\right ) d (a \cos (c+d x)+b \sin (c+d x))^{5/2}}-\frac {6 (b \cos (c+d x)-a \sin (c+d x))}{5 \left (a^2+b^2\right )^2 d \sqrt {a \cos (c+d x)+b \sin (c+d x)}}-\frac {6 E\left (\left .\frac {1}{2} \left (c+d x-\tan ^{-1}(a,b)\right )\right |2\right ) \sqrt {a \cos (c+d x)+b \sin (c+d x)}}{5 \left (a^2+b^2\right )^2 d \sqrt {\frac {a \cos (c+d x)+b \sin (c+d x)}{\sqrt {a^2+b^2}}}} \]
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Time = 0.10 (sec) , antiderivative size = 197, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.143, Rules used = {3155, 3157, 2719} \[ \int \frac {1}{(a \cos (c+d x)+b \sin (c+d x))^{7/2}} \, dx=-\frac {6 \sqrt {a \cos (c+d x)+b \sin (c+d x)} E\left (\left .\frac {1}{2} \left (c+d x-\tan ^{-1}(a,b)\right )\right |2\right )}{5 d \left (a^2+b^2\right )^2 \sqrt {\frac {a \cos (c+d x)+b \sin (c+d x)}{\sqrt {a^2+b^2}}}}-\frac {6 (b \cos (c+d x)-a \sin (c+d x))}{5 d \left (a^2+b^2\right )^2 \sqrt {a \cos (c+d x)+b \sin (c+d x)}}-\frac {2 (b \cos (c+d x)-a \sin (c+d x))}{5 d \left (a^2+b^2\right ) (a \cos (c+d x)+b \sin (c+d x))^{5/2}} \]
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Rule 2719
Rule 3155
Rule 3157
Rubi steps \begin{align*} \text {integral}& = -\frac {2 (b \cos (c+d x)-a \sin (c+d x))}{5 \left (a^2+b^2\right ) d (a \cos (c+d x)+b \sin (c+d x))^{5/2}}+\frac {3 \int \frac {1}{(a \cos (c+d x)+b \sin (c+d x))^{3/2}} \, dx}{5 \left (a^2+b^2\right )} \\ & = -\frac {2 (b \cos (c+d x)-a \sin (c+d x))}{5 \left (a^2+b^2\right ) d (a \cos (c+d x)+b \sin (c+d x))^{5/2}}-\frac {6 (b \cos (c+d x)-a \sin (c+d x))}{5 \left (a^2+b^2\right )^2 d \sqrt {a \cos (c+d x)+b \sin (c+d x)}}-\frac {3 \int \sqrt {a \cos (c+d x)+b \sin (c+d x)} \, dx}{5 \left (a^2+b^2\right )^2} \\ & = -\frac {2 (b \cos (c+d x)-a \sin (c+d x))}{5 \left (a^2+b^2\right ) d (a \cos (c+d x)+b \sin (c+d x))^{5/2}}-\frac {6 (b \cos (c+d x)-a \sin (c+d x))}{5 \left (a^2+b^2\right )^2 d \sqrt {a \cos (c+d x)+b \sin (c+d x)}}-\frac {\left (3 \sqrt {a \cos (c+d x)+b \sin (c+d x)}\right ) \int \sqrt {\cos \left (c+d x-\tan ^{-1}(a,b)\right )} \, dx}{5 \left (a^2+b^2\right )^2 \sqrt {\frac {a \cos (c+d x)+b \sin (c+d x)}{\sqrt {a^2+b^2}}}} \\ & = -\frac {2 (b \cos (c+d x)-a \sin (c+d x))}{5 \left (a^2+b^2\right ) d (a \cos (c+d x)+b \sin (c+d x))^{5/2}}-\frac {6 (b \cos (c+d x)-a \sin (c+d x))}{5 \left (a^2+b^2\right )^2 d \sqrt {a \cos (c+d x)+b \sin (c+d x)}}-\frac {6 E\left (\left .\frac {1}{2} \left (c+d x-\tan ^{-1}(a,b)\right )\right |2\right ) \sqrt {a \cos (c+d x)+b \sin (c+d x)}}{5 \left (a^2+b^2\right )^2 d \sqrt {\frac {a \cos (c+d x)+b \sin (c+d x)}{\sqrt {a^2+b^2}}}} \\ \end{align*}
Result contains higher order function than in optimal. Order 5 vs. order 4 in optimal.
Time = 1.93 (sec) , antiderivative size = 277, normalized size of antiderivative = 1.41 \[ \int \frac {1}{(a \cos (c+d x)+b \sin (c+d x))^{7/2}} \, dx=\frac {-\frac {2 \left (3 a^2 \cos ^3(c+d x)-a b \sin (c+d x)+6 a b \cos ^2(c+d x) \sin (c+d x)+b^2 \cos (c+d x) \left (1+3 \sin ^2(c+d x)\right )\right )}{(a \cos (c+d x)+b \sin (c+d x))^{5/2}}+\frac {\cos \left (c+d x-\arctan \left (\frac {b}{a}\right )\right ) \left (3 b \, _2F_1\left (-\frac {1}{2},-\frac {1}{4};\frac {3}{4};\cos ^2\left (c+d x-\arctan \left (\frac {b}{a}\right )\right )\right ) \sin \left (c+d x-\arctan \left (\frac {b}{a}\right )\right )-3 \sqrt {\sin ^2\left (c+d x-\arctan \left (\frac {b}{a}\right )\right )} \left (-2 a \cos \left (c+d x-\arctan \left (\frac {b}{a}\right )\right )+b \sin \left (c+d x-\arctan \left (\frac {b}{a}\right )\right )\right )\right )}{\left (a \sqrt {1+\frac {b^2}{a^2}} \cos \left (c+d x-\arctan \left (\frac {b}{a}\right )\right )\right )^{3/2} \sqrt {\sin ^2\left (c+d x-\arctan \left (\frac {b}{a}\right )\right )}}}{5 b \left (a^2+b^2\right ) d} \]
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Time = 1.09 (sec) , antiderivative size = 297, normalized size of antiderivative = 1.51
method | result | size |
default | \(\frac {\sqrt {a^{2}+b^{2}}\, \left (6 \sqrt {-\sin \left (d x +c -\arctan \left (-a , b\right )\right )+1}\, \sqrt {2 \sin \left (d x +c -\arctan \left (-a , b\right )\right )+2}\, \sin \left (d x +c -\arctan \left (-a , b\right )\right )^{\frac {7}{2}} \operatorname {EllipticE}\left (\sqrt {-\sin \left (d x +c -\arctan \left (-a , b\right )\right )+1}, \frac {\sqrt {2}}{2}\right )-3 \sqrt {-\sin \left (d x +c -\arctan \left (-a , b\right )\right )+1}\, \sqrt {2 \sin \left (d x +c -\arctan \left (-a , b\right )\right )+2}\, \sin \left (d x +c -\arctan \left (-a , b\right )\right )^{\frac {7}{2}} \operatorname {EllipticF}\left (\sqrt {-\sin \left (d x +c -\arctan \left (-a , b\right )\right )+1}, \frac {\sqrt {2}}{2}\right )+6 \sin \left (d x +c -\arctan \left (-a , b\right )\right )^{5}-4 \sin \left (d x +c -\arctan \left (-a , b\right )\right )^{3}-2 \sin \left (d x +c -\arctan \left (-a , b\right )\right )\right )}{5 \sin \left (d x +c -\arctan \left (-a , b\right )\right )^{3} \left (a^{4}+2 a^{2} b^{2}+b^{4}\right ) \cos \left (d x +c -\arctan \left (-a , b\right )\right ) \sqrt {\sin \left (d x +c -\arctan \left (-a , b\right )\right ) \sqrt {a^{2}+b^{2}}}\, d}\) | \(297\) |
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Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 0.12 (sec) , antiderivative size = 552, normalized size of antiderivative = 2.80 \[ \int \frac {1}{(a \cos (c+d x)+b \sin (c+d x))^{7/2}} \, dx=\frac {3 \, {\left (-3 i \, \sqrt {2} a b^{2} \cos \left (d x + c\right ) + \sqrt {2} {\left (-i \, a^{3} + 3 i \, a b^{2}\right )} \cos \left (d x + c\right )^{3} + {\left (-i \, \sqrt {2} b^{3} + \sqrt {2} {\left (-3 i \, a^{2} b + i \, b^{3}\right )} \cos \left (d x + c\right )^{2}\right )} \sin \left (d x + c\right )\right )} \sqrt {a - i \, b} {\rm weierstrassZeta}\left (-\frac {4 \, {\left (a^{2} + 2 i \, a b - b^{2}\right )}}{a^{2} + b^{2}}, 0, {\rm weierstrassPInverse}\left (-\frac {4 \, {\left (a^{2} + 2 i \, a b - b^{2}\right )}}{a^{2} + b^{2}}, 0, \cos \left (d x + c\right ) + i \, \sin \left (d x + c\right )\right )\right ) + 3 \, {\left (3 i \, \sqrt {2} a b^{2} \cos \left (d x + c\right ) + \sqrt {2} {\left (i \, a^{3} - 3 i \, a b^{2}\right )} \cos \left (d x + c\right )^{3} + {\left (i \, \sqrt {2} b^{3} + \sqrt {2} {\left (3 i \, a^{2} b - i \, b^{3}\right )} \cos \left (d x + c\right )^{2}\right )} \sin \left (d x + c\right )\right )} \sqrt {a + i \, b} {\rm weierstrassZeta}\left (-\frac {4 \, {\left (a^{2} - 2 i \, a b - b^{2}\right )}}{a^{2} + b^{2}}, 0, {\rm weierstrassPInverse}\left (-\frac {4 \, {\left (a^{2} - 2 i \, a b - b^{2}\right )}}{a^{2} + b^{2}}, 0, \cos \left (d x + c\right ) - i \, \sin \left (d x + c\right )\right )\right ) - 2 \, {\left (3 \, {\left (3 \, a^{2} b - b^{3}\right )} \cos \left (d x + c\right )^{3} - {\left (5 \, a^{2} b - 4 \, b^{3}\right )} \cos \left (d x + c\right ) - {\left (a^{3} + 4 \, a b^{2} + 3 \, {\left (a^{3} - 3 \, a b^{2}\right )} \cos \left (d x + c\right )^{2}\right )} \sin \left (d x + c\right )\right )} \sqrt {a \cos \left (d x + c\right ) + b \sin \left (d x + c\right )}}{5 \, {\left ({\left (a^{7} - a^{5} b^{2} - 5 \, a^{3} b^{4} - 3 \, a b^{6}\right )} d \cos \left (d x + c\right )^{3} + 3 \, {\left (a^{5} b^{2} + 2 \, a^{3} b^{4} + a b^{6}\right )} d \cos \left (d x + c\right ) + {\left ({\left (3 \, a^{6} b + 5 \, a^{4} b^{3} + a^{2} b^{5} - b^{7}\right )} d \cos \left (d x + c\right )^{2} + {\left (a^{4} b^{3} + 2 \, a^{2} b^{5} + b^{7}\right )} d\right )} \sin \left (d x + c\right )\right )}} \]
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Timed out. \[ \int \frac {1}{(a \cos (c+d x)+b \sin (c+d x))^{7/2}} \, dx=\text {Timed out} \]
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\[ \int \frac {1}{(a \cos (c+d x)+b \sin (c+d x))^{7/2}} \, dx=\int { \frac {1}{{\left (a \cos \left (d x + c\right ) + b \sin \left (d x + c\right )\right )}^{\frac {7}{2}}} \,d x } \]
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\[ \int \frac {1}{(a \cos (c+d x)+b \sin (c+d x))^{7/2}} \, dx=\int { \frac {1}{{\left (a \cos \left (d x + c\right ) + b \sin \left (d x + c\right )\right )}^{\frac {7}{2}}} \,d x } \]
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Timed out. \[ \int \frac {1}{(a \cos (c+d x)+b \sin (c+d x))^{7/2}} \, dx=\int \frac {1}{{\left (a\,\cos \left (c+d\,x\right )+b\,\sin \left (c+d\,x\right )\right )}^{7/2}} \,d x \]
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