Optimal. Leaf size=66 \[ \frac {i \sqrt {\pi } e^{-i c} \text {erf}(b x)^2}{8 b}-\frac {i b e^{i c} x^2 \, _2F_2\left (1,1;\frac {3}{2},2;b^2 x^2\right )}{2 \sqrt {\pi }} \]
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Rubi [A] time = 0.06, antiderivative size = 66, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, integrand size = 18, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.222, Rules used = {6404, 6373, 30, 6376} \[ \frac {i \sqrt {\pi } e^{-i c} \text {Erf}(b x)^2}{8 b}-\frac {i b e^{i c} x^2 \, _2F_2\left (1,1;\frac {3}{2},2;b^2 x^2\right )}{2 \sqrt {\pi }} \]
Antiderivative was successfully verified.
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Rule 30
Rule 6373
Rule 6376
Rule 6404
Rubi steps
\begin {align*} \int \text {erf}(b x) \sin \left (c-i b^2 x^2\right ) \, dx &=\frac {1}{2} i \int e^{-i c-b^2 x^2} \text {erf}(b x) \, dx-\frac {1}{2} i \int e^{i c+b^2 x^2} \text {erf}(b x) \, dx\\ &=-\frac {i b e^{i c} x^2 \, _2F_2\left (1,1;\frac {3}{2},2;b^2 x^2\right )}{2 \sqrt {\pi }}+\frac {\left (i e^{-i c} \sqrt {\pi }\right ) \operatorname {Subst}(\int x \, dx,x,\text {erf}(b x))}{4 b}\\ &=\frac {i e^{-i c} \sqrt {\pi } \text {erf}(b x)^2}{8 b}-\frac {i b e^{i c} x^2 \, _2F_2\left (1,1;\frac {3}{2},2;b^2 x^2\right )}{2 \sqrt {\pi }}\\ \end {align*}
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Mathematica [A] time = 0.09, size = 67, normalized size = 1.02 \[ \frac {(\sin (c)+i \cos (c)) \left (\pi \text {erf}(b x)^2-4 b^2 x^2 (\cos (2 c)+i \sin (2 c)) \, _2F_2\left (1,1;\frac {3}{2},2;b^2 x^2\right )\right )}{8 \sqrt {\pi } b} \]
Antiderivative was successfully verified.
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fricas [F] time = 0.63, size = 0, normalized size = 0.00 \[ {\rm integral}\left (\frac {1}{2} \, {\left (i \, \operatorname {erf}\left (b x\right ) e^{\left (-2 \, b^{2} x^{2} - 2 i \, c\right )} - i \, \operatorname {erf}\left (b x\right )\right )} e^{\left (b^{2} x^{2} + i \, c\right )}, x\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int -\operatorname {erf}\left (b x\right ) \sin \left (i \, b^{2} x^{2} - c\right )\,{d x} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [F] time = 0.05, size = 0, normalized size = 0.00 \[ \int -\erf \left (b x \right ) \sin \left (i b^{2} x^{2}-c \right )\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [F] time = 0.00, size = 0, normalized size = 0.00 \[ \frac {i \, \sqrt {\pi } \cos \relax (c) \operatorname {erf}\left (b x\right )^{2}}{8 \, b} + \frac {\sqrt {\pi } \operatorname {erf}\left (b x\right )^{2} \sin \relax (c)}{8 \, b} - \frac {1}{2} i \, \cos \relax (c) \int \operatorname {erf}\left (b x\right ) e^{\left (b^{2} x^{2}\right )}\,{d x} + \frac {1}{2} \, \int \operatorname {erf}\left (b x\right ) e^{\left (b^{2} x^{2}\right )}\,{d x} \sin \relax (c) \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [F] time = 0.00, size = -1, normalized size = -0.02 \[ \int \sin \left (c-b^2\,x^2\,1{}\mathrm {i}\right )\,\mathrm {erf}\left (b\,x\right ) \,d x \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [F] time = 0.00, size = 0, normalized size = 0.00 \[ - \int \sin {\left (i b^{2} x^{2} - c \right )} \operatorname {erf}{\left (b x \right )}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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