Integrand size = 15, antiderivative size = 85 \[ \int x^2 \sin ^2\left (\frac {1}{4}+x+x^2\right ) \, dx=\frac {x^3}{6}-\frac {1}{16} \sqrt {\pi } \operatorname {FresnelC}\left (\frac {1+2 x}{\sqrt {\pi }}\right )+\frac {1}{16} \sqrt {\pi } \operatorname {FresnelS}\left (\frac {1+2 x}{\sqrt {\pi }}\right )+\frac {1}{16} \sin \left (\frac {1}{2}+2 x+2 x^2\right )-\frac {1}{8} x \sin \left (\frac {1}{2}+2 x+2 x^2\right ) \]
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Time = 0.05 (sec) , antiderivative size = 85, normalized size of antiderivative = 1.00, number of steps used = 8, number of rules used = 7, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.467, Rules used = {3548, 3545, 3543, 3527, 3433, 3526, 3432} \[ \int x^2 \sin ^2\left (\frac {1}{4}+x+x^2\right ) \, dx=-\frac {1}{16} \sqrt {\pi } \operatorname {FresnelC}\left (\frac {2 x+1}{\sqrt {\pi }}\right )+\frac {1}{16} \sqrt {\pi } \operatorname {FresnelS}\left (\frac {2 x+1}{\sqrt {\pi }}\right )+\frac {x^3}{6}-\frac {1}{8} x \sin \left (2 x^2+2 x+\frac {1}{2}\right )+\frac {1}{16} \sin \left (2 x^2+2 x+\frac {1}{2}\right ) \]
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Rule 3432
Rule 3433
Rule 3526
Rule 3527
Rule 3543
Rule 3545
Rule 3548
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {x^2}{2}-\frac {1}{2} x^2 \cos \left (\frac {1}{2}+2 x+2 x^2\right )\right ) \, dx \\ & = \frac {x^3}{6}-\frac {1}{2} \int x^2 \cos \left (\frac {1}{2}+2 x+2 x^2\right ) \, dx \\ & = \frac {x^3}{6}-\frac {1}{8} x \sin \left (\frac {1}{2}+2 x+2 x^2\right )+\frac {1}{8} \int \sin \left (\frac {1}{2}+2 x+2 x^2\right ) \, dx+\frac {1}{4} \int x \cos \left (\frac {1}{2}+2 x+2 x^2\right ) \, dx \\ & = \frac {x^3}{6}+\frac {1}{16} \sin \left (\frac {1}{2}+2 x+2 x^2\right )-\frac {1}{8} x \sin \left (\frac {1}{2}+2 x+2 x^2\right )-\frac {1}{8} \int \cos \left (\frac {1}{2}+2 x+2 x^2\right ) \, dx+\frac {1}{8} \int \sin \left (\frac {1}{8} (2+4 x)^2\right ) \, dx \\ & = \frac {x^3}{6}+\frac {1}{16} \sqrt {\pi } \operatorname {FresnelS}\left (\frac {1+2 x}{\sqrt {\pi }}\right )+\frac {1}{16} \sin \left (\frac {1}{2}+2 x+2 x^2\right )-\frac {1}{8} x \sin \left (\frac {1}{2}+2 x+2 x^2\right )-\frac {1}{8} \int \cos \left (\frac {1}{8} (2+4 x)^2\right ) \, dx \\ & = \frac {x^3}{6}-\frac {1}{16} \sqrt {\pi } \operatorname {FresnelC}\left (\frac {1+2 x}{\sqrt {\pi }}\right )+\frac {1}{16} \sqrt {\pi } \operatorname {FresnelS}\left (\frac {1+2 x}{\sqrt {\pi }}\right )+\frac {1}{16} \sin \left (\frac {1}{2}+2 x+2 x^2\right )-\frac {1}{8} x \sin \left (\frac {1}{2}+2 x+2 x^2\right ) \\ \end{align*}
Time = 0.10 (sec) , antiderivative size = 77, normalized size of antiderivative = 0.91 \[ \int x^2 \sin ^2\left (\frac {1}{4}+x+x^2\right ) \, dx=\frac {1}{48} \left (8 x^3-3 \sqrt {\pi } \operatorname {FresnelC}\left (\frac {1+2 x}{\sqrt {\pi }}\right )+3 \sqrt {\pi } \operatorname {FresnelS}\left (\frac {1+2 x}{\sqrt {\pi }}\right )+3 \sin \left (\frac {1}{2} (1+2 x)^2\right )-6 x \sin \left (\frac {1}{2} (1+2 x)^2\right )\right ) \]
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Time = 0.71 (sec) , antiderivative size = 64, normalized size of antiderivative = 0.75
method | result | size |
default | \(\frac {x^{3}}{6}+\frac {\sin \left (\frac {1}{2}+2 x +2 x^{2}\right )}{16}-\frac {x \sin \left (\frac {1}{2}+2 x +2 x^{2}\right )}{8}-\frac {\operatorname {C}\left (\frac {1+2 x}{\sqrt {\pi }}\right ) \sqrt {\pi }}{16}+\frac {\operatorname {S}\left (\frac {1+2 x}{\sqrt {\pi }}\right ) \sqrt {\pi }}{16}\) | \(64\) |
risch | \(\frac {\sqrt {\pi }\, \sqrt {2}\, \left (-1\right )^{\frac {3}{4}} \operatorname {erf}\left (\sqrt {2}\, \left (-1\right )^{\frac {1}{4}} x +\frac {\sqrt {2}\, \left (-1\right )^{\frac {1}{4}}}{2}\right )}{64}+\frac {\left (-1\right )^{\frac {1}{4}} \sqrt {\pi }\, \sqrt {2}\, \operatorname {erf}\left (\sqrt {2}\, \left (-1\right )^{\frac {1}{4}} x +\frac {\sqrt {2}\, \left (-1\right )^{\frac {1}{4}}}{2}\right )}{64}-\frac {\sqrt {\pi }\, \operatorname {erf}\left (\sqrt {-2 i}\, x -\frac {i}{\sqrt {-2 i}}\right )}{32 \sqrt {-2 i}}-\frac {i \sqrt {\pi }\, \operatorname {erf}\left (\sqrt {-2 i}\, x -\frac {i}{\sqrt {-2 i}}\right )}{32 \sqrt {-2 i}}+\frac {x^{3}}{6}+2 i \left (\frac {1}{16} i x -\frac {1}{32} i\right ) \sin \left (\frac {\left (1+2 x \right )^{2}}{2}\right )\) | \(134\) |
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Time = 0.28 (sec) , antiderivative size = 57, normalized size of antiderivative = 0.67 \[ \int x^2 \sin ^2\left (\frac {1}{4}+x+x^2\right ) \, dx=\frac {1}{6} \, x^{3} - \frac {1}{8} \, {\left (2 \, x - 1\right )} \cos \left (x^{2} + x + \frac {1}{4}\right ) \sin \left (x^{2} + x + \frac {1}{4}\right ) - \frac {1}{16} \, \sqrt {\pi } \operatorname {C}\left (\frac {2 \, x + 1}{\sqrt {\pi }}\right ) + \frac {1}{16} \, \sqrt {\pi } \operatorname {S}\left (\frac {2 \, x + 1}{\sqrt {\pi }}\right ) \]
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\[ \int x^2 \sin ^2\left (\frac {1}{4}+x+x^2\right ) \, dx=\int x^{2} \sin ^{2}{\left (x^{2} + x + \frac {1}{4} \right )}\, dx \]
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Result contains complex when optimal does not.
Time = 0.41 (sec) , antiderivative size = 171, normalized size of antiderivative = 2.01 \[ \int x^2 \sin ^2\left (\frac {1}{4}+x+x^2\right ) \, dx=\frac {128 \, x^{4} + 64 \, x^{3} + 48 \, x {\left (-i \, e^{\left (2 i \, x^{2} + 2 i \, x + \frac {1}{2} i\right )} + i \, e^{\left (-2 i \, x^{2} - 2 i \, x - \frac {1}{2} i\right )}\right )} + 3 \, \sqrt {8 \, x^{2} + 8 \, x + 2} {\left (\left (i - 1\right ) \, \sqrt {2} \sqrt {\pi } {\left (\operatorname {erf}\left (\sqrt {2 i \, x^{2} + 2 i \, x + \frac {1}{2} i}\right ) - 1\right )} - \left (i + 1\right ) \, \sqrt {2} \sqrt {\pi } {\left (\operatorname {erf}\left (\sqrt {-2 i \, x^{2} - 2 i \, x - \frac {1}{2} i}\right ) - 1\right )} - \left (2 i + 2\right ) \, \sqrt {2} \Gamma \left (\frac {3}{2}, 2 i \, x^{2} + 2 i \, x + \frac {1}{2} i\right ) + \left (2 i - 2\right ) \, \sqrt {2} \Gamma \left (\frac {3}{2}, -2 i \, x^{2} - 2 i \, x - \frac {1}{2} i\right )\right )} - 24 i \, e^{\left (2 i \, x^{2} + 2 i \, x + \frac {1}{2} i\right )} + 24 i \, e^{\left (-2 i \, x^{2} - 2 i \, x - \frac {1}{2} i\right )}}{384 \, {\left (2 \, x + 1\right )}} \]
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Result contains complex when optimal does not.
Time = 0.31 (sec) , antiderivative size = 64, normalized size of antiderivative = 0.75 \[ \int x^2 \sin ^2\left (\frac {1}{4}+x+x^2\right ) \, dx=\frac {1}{6} \, x^{3} - \frac {1}{32} \, {\left (-2 i \, x + i\right )} e^{\left (2 i \, x^{2} + 2 i \, x + \frac {1}{2} i\right )} - \frac {1}{32} \, {\left (2 i \, x - i\right )} e^{\left (-2 i \, x^{2} - 2 i \, x - \frac {1}{2} i\right )} + \frac {1}{32} i \, \sqrt {\pi } \operatorname {erf}\left (\left (i - 1\right ) \, x + \frac {1}{2} i - \frac {1}{2}\right ) - \frac {1}{32} i \, \sqrt {\pi } \operatorname {erf}\left (-\left (i + 1\right ) \, x - \frac {1}{2} i - \frac {1}{2}\right ) \]
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Timed out. \[ \int x^2 \sin ^2\left (\frac {1}{4}+x+x^2\right ) \, dx=\int x^2\,{\sin \left (x^2+x+\frac {1}{4}\right )}^2 \,d x \]
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