Integrand size = 14, antiderivative size = 104 \[ \int \frac {\cos \left (a+b x^2\right )}{x^{5/2}} \, dx=-\frac {2 \cos \left (a+b x^2\right )}{3 x^{3/2}}-\frac {i b e^{i a} \sqrt {x} \Gamma \left (\frac {1}{4},-i b x^2\right )}{3 \sqrt [4]{-i b x^2}}+\frac {i b e^{-i a} \sqrt {x} \Gamma \left (\frac {1}{4},i b x^2\right )}{3 \sqrt [4]{i b x^2}} \]
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Time = 0.08 (sec) , antiderivative size = 104, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.214, Rules used = {3469, 3470, 2250} \[ \int \frac {\cos \left (a+b x^2\right )}{x^{5/2}} \, dx=-\frac {i e^{i a} b \sqrt {x} \Gamma \left (\frac {1}{4},-i b x^2\right )}{3 \sqrt [4]{-i b x^2}}+\frac {i e^{-i a} b \sqrt {x} \Gamma \left (\frac {1}{4},i b x^2\right )}{3 \sqrt [4]{i b x^2}}-\frac {2 \cos \left (a+b x^2\right )}{3 x^{3/2}} \]
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Rule 2250
Rule 3469
Rule 3470
Rubi steps \begin{align*} \text {integral}& = -\frac {2 \cos \left (a+b x^2\right )}{3 x^{3/2}}-\frac {1}{3} (4 b) \int \frac {\sin \left (a+b x^2\right )}{\sqrt {x}} \, dx \\ & = -\frac {2 \cos \left (a+b x^2\right )}{3 x^{3/2}}-\frac {1}{3} (2 i b) \int \frac {e^{-i a-i b x^2}}{\sqrt {x}} \, dx+\frac {1}{3} (2 i b) \int \frac {e^{i a+i b x^2}}{\sqrt {x}} \, dx \\ & = -\frac {2 \cos \left (a+b x^2\right )}{3 x^{3/2}}-\frac {i b e^{i a} \sqrt {x} \Gamma \left (\frac {1}{4},-i b x^2\right )}{3 \sqrt [4]{-i b x^2}}+\frac {i b e^{-i a} \sqrt {x} \Gamma \left (\frac {1}{4},i b x^2\right )}{3 \sqrt [4]{i b x^2}} \\ \end{align*}
Time = 0.18 (sec) , antiderivative size = 117, normalized size of antiderivative = 1.12 \[ \int \frac {\cos \left (a+b x^2\right )}{x^{5/2}} \, dx=\frac {-2 \sqrt [4]{b^2 x^4} \cos \left (a+b x^2\right )+b x^2 \sqrt [4]{i b x^2} \Gamma \left (\frac {1}{4},-i b x^2\right ) (-i \cos (a)+\sin (a))+i \left (-i b x^2\right )^{5/4} \Gamma \left (\frac {1}{4},i b x^2\right ) (i \cos (a)+\sin (a))}{3 x^{3/2} \sqrt [4]{b^2 x^4}} \]
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Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 0.46 (sec) , antiderivative size = 358, normalized size of antiderivative = 3.44
method | result | size |
meijerg | \(\frac {\cos \left (a \right ) \sqrt {\pi }\, 2^{\frac {1}{4}} \left (b^{2}\right )^{\frac {3}{8}} \left (-\frac {4 \,2^{\frac {3}{4}} \left (\frac {8 x^{4} b^{2}}{15}+\frac {2}{3}\right ) \sin \left (b \,x^{2}\right )}{\sqrt {\pi }\, x^{\frac {7}{2}} \left (b^{2}\right )^{\frac {3}{8}} b}-\frac {8 \,2^{\frac {3}{4}} \left (-16 x^{4} b^{2}+5\right ) \left (\cos \left (b \,x^{2}\right ) x^{2} b -\sin \left (b \,x^{2}\right )\right )}{15 \sqrt {\pi }\, x^{\frac {7}{2}} \left (b^{2}\right )^{\frac {3}{8}} b}+\frac {32 x^{\frac {9}{2}} 2^{\frac {3}{4}} b^{3} \sin \left (b \,x^{2}\right ) s_{\frac {3}{4},\frac {3}{2}}^{\left (+\right )}\left (b \,x^{2}\right )}{15 \sqrt {\pi }\, \left (b^{2}\right )^{\frac {3}{8}} \left (b \,x^{2}\right )^{\frac {7}{4}}}-\frac {128 x^{\frac {9}{2}} 2^{\frac {3}{4}} b^{3} \left (\cos \left (b \,x^{2}\right ) x^{2} b -\sin \left (b \,x^{2}\right )\right ) s_{\frac {7}{4},\frac {1}{2}}^{\left (+\right )}\left (b \,x^{2}\right )}{15 \sqrt {\pi }\, \left (b^{2}\right )^{\frac {3}{8}} \left (b \,x^{2}\right )^{\frac {11}{4}}}\right )}{8}-\frac {\sin \left (a \right ) \sqrt {\pi }\, 2^{\frac {1}{4}} b^{\frac {3}{4}} \left (\frac {12 \,2^{\frac {3}{4}} \left (\frac {32 x^{4} b^{2}}{81}+\frac {2}{3}\right ) \sin \left (b \,x^{2}\right )}{\sqrt {\pi }\, x^{\frac {3}{2}} b^{\frac {3}{4}}}+\frac {32 \,2^{\frac {3}{4}} \left (\cos \left (b \,x^{2}\right ) x^{2} b -\sin \left (b \,x^{2}\right )\right )}{3 \sqrt {\pi }\, x^{\frac {3}{2}} b^{\frac {3}{4}}}-\frac {128 x^{\frac {9}{2}} b^{\frac {9}{4}} 2^{\frac {3}{4}} \sin \left (b \,x^{2}\right ) s_{\frac {7}{4},\frac {3}{2}}^{\left (+\right )}\left (b \,x^{2}\right )}{27 \sqrt {\pi }\, \left (b \,x^{2}\right )^{\frac {7}{4}}}-\frac {32 x^{\frac {9}{2}} b^{\frac {9}{4}} 2^{\frac {3}{4}} \left (\cos \left (b \,x^{2}\right ) x^{2} b -\sin \left (b \,x^{2}\right )\right ) s_{\frac {3}{4},\frac {1}{2}}^{\left (+\right )}\left (b \,x^{2}\right )}{3 \sqrt {\pi }\, \left (b \,x^{2}\right )^{\frac {11}{4}}}\right )}{8}\) | \(358\) |
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Time = 0.09 (sec) , antiderivative size = 75, normalized size of antiderivative = 0.72 \[ \int \frac {\cos \left (a+b x^2\right )}{x^{5/2}} \, dx=\frac {{\left (x^{2} \cos \left (a\right ) - i \, x^{2} \sin \left (a\right )\right )} \left (i \, b\right )^{\frac {3}{4}} \Gamma \left (\frac {1}{4}, i \, b x^{2}\right ) + {\left (x^{2} \cos \left (a\right ) + i \, x^{2} \sin \left (a\right )\right )} \left (-i \, b\right )^{\frac {3}{4}} \Gamma \left (\frac {1}{4}, -i \, b x^{2}\right ) - 2 \, \sqrt {x} \cos \left (b x^{2} + a\right )}{3 \, x^{2}} \]
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\[ \int \frac {\cos \left (a+b x^2\right )}{x^{5/2}} \, dx=\int \frac {\cos {\left (a + b x^{2} \right )}}{x^{\frac {5}{2}}}\, dx \]
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Exception generated. \[ \int \frac {\cos \left (a+b x^2\right )}{x^{5/2}} \, dx=\text {Exception raised: RuntimeError} \]
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\[ \int \frac {\cos \left (a+b x^2\right )}{x^{5/2}} \, dx=\int { \frac {\cos \left (b x^{2} + a\right )}{x^{\frac {5}{2}}} \,d x } \]
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Timed out. \[ \int \frac {\cos \left (a+b x^2\right )}{x^{5/2}} \, dx=\int \frac {\cos \left (b\,x^2+a\right )}{x^{5/2}} \,d x \]
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