Integrand size = 20, antiderivative size = 140 \[ \int f^{a+c x^2} \sin ^2\left (d+f x^2\right ) \, dx=\frac {f^a \sqrt {\pi } \text {erfi}\left (\sqrt {c} x \sqrt {\log (f)}\right )}{4 \sqrt {c} \sqrt {\log (f)}}-\frac {e^{-2 i d} f^a \sqrt {\pi } \text {erf}\left (x \sqrt {2 i f-c \log (f)}\right )}{8 \sqrt {2 i f-c \log (f)}}-\frac {e^{2 i d} f^a \sqrt {\pi } \text {erfi}\left (x \sqrt {2 i f+c \log (f)}\right )}{8 \sqrt {2 i f+c \log (f)}} \]
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Time = 0.27 (sec) , antiderivative size = 140, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.200, Rules used = {4560, 2235, 2325, 2236} \[ \int f^{a+c x^2} \sin ^2\left (d+f x^2\right ) \, dx=-\frac {\sqrt {\pi } e^{-2 i d} f^a \text {erf}\left (x \sqrt {-c \log (f)+2 i f}\right )}{8 \sqrt {-c \log (f)+2 i f}}-\frac {\sqrt {\pi } e^{2 i d} f^a \text {erfi}\left (x \sqrt {c \log (f)+2 i f}\right )}{8 \sqrt {c \log (f)+2 i f}}+\frac {\sqrt {\pi } f^a \text {erfi}\left (\sqrt {c} x \sqrt {\log (f)}\right )}{4 \sqrt {c} \sqrt {\log (f)}} \]
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Rule 2235
Rule 2236
Rule 2325
Rule 4560
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {1}{2} f^{a+c x^2}-\frac {1}{4} e^{-2 i d-2 i f x^2} f^{a+c x^2}-\frac {1}{4} e^{2 i d+2 i f x^2} f^{a+c x^2}\right ) \, dx \\ & = -\left (\frac {1}{4} \int e^{-2 i d-2 i f x^2} f^{a+c x^2} \, dx\right )-\frac {1}{4} \int e^{2 i d+2 i f x^2} f^{a+c x^2} \, dx+\frac {1}{2} \int f^{a+c x^2} \, dx \\ & = \frac {f^a \sqrt {\pi } \text {erfi}\left (\sqrt {c} x \sqrt {\log (f)}\right )}{4 \sqrt {c} \sqrt {\log (f)}}-\frac {1}{4} \int \exp \left (-2 i d+a \log (f)-x^2 (2 i f-c \log (f))\right ) \, dx-\frac {1}{4} \int \exp \left (2 i d+a \log (f)+x^2 (2 i f+c \log (f))\right ) \, dx \\ & = \frac {f^a \sqrt {\pi } \text {erfi}\left (\sqrt {c} x \sqrt {\log (f)}\right )}{4 \sqrt {c} \sqrt {\log (f)}}-\frac {e^{-2 i d} f^a \sqrt {\pi } \text {erf}\left (x \sqrt {2 i f-c \log (f)}\right )}{8 \sqrt {2 i f-c \log (f)}}-\frac {e^{2 i d} f^a \sqrt {\pi } \text {erfi}\left (x \sqrt {2 i f+c \log (f)}\right )}{8 \sqrt {2 i f+c \log (f)}} \\ \end{align*}
Time = 0.63 (sec) , antiderivative size = 188, normalized size of antiderivative = 1.34 \[ \int f^{a+c x^2} \sin ^2\left (d+f x^2\right ) \, dx=\frac {1}{8} f^a \sqrt {\pi } \left (\frac {2 \text {erfi}\left (\sqrt {c} x \sqrt {\log (f)}\right )}{\sqrt {c} \sqrt {\log (f)}}+\frac {\sqrt [4]{-1} \left (\text {erf}\left (\sqrt [4]{-1} x \sqrt {2 f+i c \log (f)}\right ) \sqrt {2 f+i c \log (f)} (2 i f+c \log (f)) (\cos (2 d)-i \sin (2 d))+\text {erf}\left ((-1)^{3/4} x \sqrt {2 f-i c \log (f)}\right ) \sqrt {2 f-i c \log (f)} (2 f+i c \log (f)) (\cos (2 d)+i \sin (2 d))\right )}{4 f^2+c^2 \log ^2(f)}\right ) \]
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Time = 0.59 (sec) , antiderivative size = 107, normalized size of antiderivative = 0.76
method | result | size |
risch | \(-\frac {\sqrt {\pi }\, f^{a} {\mathrm e}^{-2 i d} \operatorname {erf}\left (x \sqrt {2 i f -c \ln \left (f \right )}\right )}{8 \sqrt {2 i f -c \ln \left (f \right )}}-\frac {\sqrt {\pi }\, f^{a} {\mathrm e}^{2 i d} \operatorname {erf}\left (\sqrt {-c \ln \left (f \right )-2 i f}\, x \right )}{8 \sqrt {-c \ln \left (f \right )-2 i f}}+\frac {f^{a} \sqrt {\pi }\, \operatorname {erf}\left (\sqrt {-c \ln \left (f \right )}\, x \right )}{4 \sqrt {-c \ln \left (f \right )}}\) | \(107\) |
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none
Time = 0.26 (sec) , antiderivative size = 169, normalized size of antiderivative = 1.21 \[ \int f^{a+c x^2} \sin ^2\left (d+f x^2\right ) \, dx=-\frac {2 \, \sqrt {\pi } {\left (c^{2} \log \left (f\right )^{2} + 4 \, f^{2}\right )} \sqrt {-c \log \left (f\right )} f^{a} \operatorname {erf}\left (\sqrt {-c \log \left (f\right )} x\right ) - \sqrt {\pi } {\left (c^{2} \log \left (f\right )^{2} - 2 i \, c f \log \left (f\right )\right )} \sqrt {-c \log \left (f\right ) - 2 i \, f} \operatorname {erf}\left (\sqrt {-c \log \left (f\right ) - 2 i \, f} x\right ) e^{\left (a \log \left (f\right ) + 2 i \, d\right )} - \sqrt {\pi } {\left (c^{2} \log \left (f\right )^{2} + 2 i \, c f \log \left (f\right )\right )} \sqrt {-c \log \left (f\right ) + 2 i \, f} \operatorname {erf}\left (\sqrt {-c \log \left (f\right ) + 2 i \, f} x\right ) e^{\left (a \log \left (f\right ) - 2 i \, d\right )}}{8 \, {\left (c^{3} \log \left (f\right )^{3} + 4 \, c f^{2} \log \left (f\right )\right )}} \]
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\[ \int f^{a+c x^2} \sin ^2\left (d+f x^2\right ) \, dx=\int f^{a + c x^{2}} \sin ^{2}{\left (d + f x^{2} \right )}\, dx \]
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Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 0.22 (sec) , antiderivative size = 315, normalized size of antiderivative = 2.25 \[ \int f^{a+c x^2} \sin ^2\left (d+f x^2\right ) \, dx=\frac {\sqrt {\pi } \sqrt {2 \, c^{2} \log \left (f\right )^{2} + 8 \, f^{2}} {\left (f^{a} {\left (i \, \cos \left (2 \, d\right ) + \sin \left (2 \, d\right )\right )} \operatorname {erf}\left (\sqrt {-c \log \left (f\right ) + 2 i \, f} x\right ) + f^{a} {\left (-i \, \cos \left (2 \, d\right ) + \sin \left (2 \, d\right )\right )} \operatorname {erf}\left (\sqrt {-c \log \left (f\right ) - 2 i \, f} x\right )\right )} \sqrt {c \log \left (f\right ) + \sqrt {c^{2} \log \left (f\right )^{2} + 4 \, f^{2}}} \sqrt {-c \log \left (f\right )} - \sqrt {\pi } \sqrt {2 \, c^{2} \log \left (f\right )^{2} + 8 \, f^{2}} {\left (f^{a} {\left (\cos \left (2 \, d\right ) - i \, \sin \left (2 \, d\right )\right )} \operatorname {erf}\left (\sqrt {-c \log \left (f\right ) + 2 i \, f} x\right ) + f^{a} {\left (\cos \left (2 \, d\right ) + i \, \sin \left (2 \, d\right )\right )} \operatorname {erf}\left (\sqrt {-c \log \left (f\right ) - 2 i \, f} x\right )\right )} \sqrt {-c \log \left (f\right ) + \sqrt {c^{2} \log \left (f\right )^{2} + 4 \, f^{2}}} \sqrt {-c \log \left (f\right )} + 2 \, \sqrt {\pi } {\left ({\left (c^{2} f^{a} \log \left (f\right )^{2} + 4 \, f^{a + 2}\right )} \operatorname {erf}\left (x \overline {\sqrt {-c \log \left (f\right )}}\right ) + {\left (c^{2} f^{a} \log \left (f\right )^{2} + 4 \, f^{a + 2}\right )} \operatorname {erf}\left (\sqrt {-c \log \left (f\right )} x\right )\right )}}{16 \, {\left (c^{2} \log \left (f\right )^{2} + 4 \, f^{2}\right )} \sqrt {-c \log \left (f\right )}} \]
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\[ \int f^{a+c x^2} \sin ^2\left (d+f x^2\right ) \, dx=\int { f^{c x^{2} + a} \sin \left (f x^{2} + d\right )^{2} \,d x } \]
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Timed out. \[ \int f^{a+c x^2} \sin ^2\left (d+f x^2\right ) \, dx=\int f^{c\,x^2+a}\,{\sin \left (f\,x^2+d\right )}^2 \,d x \]
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