3.260 \(\int e^{c+d x^2} x^3 \text{Erfi}(b x) \, dx\)

Optimal. Leaf size=142 \[ \frac{b e^c \text{Erfi}\left (x \sqrt{b^2+d}\right )}{2 d^2 \sqrt{b^2+d}}+\frac{b e^c \text{Erfi}\left (x \sqrt{b^2+d}\right )}{4 d \left (b^2+d\right )^{3/2}}-\frac{b x e^{x^2 \left (b^2+d\right )+c}}{2 \sqrt{\pi } d \left (b^2+d\right )}-\frac{\text{Erfi}(b x) e^{c+d x^2}}{2 d^2}+\frac{x^2 \text{Erfi}(b x) e^{c+d x^2}}{2 d} \]

[Out]

-(b*E^(c + (b^2 + d)*x^2)*x)/(2*d*(b^2 + d)*Sqrt[Pi]) - (E^(c + d*x^2)*Erfi[b*x])/(2*d^2) + (E^(c + d*x^2)*x^2
*Erfi[b*x])/(2*d) + (b*E^c*Erfi[Sqrt[b^2 + d]*x])/(4*d*(b^2 + d)^(3/2)) + (b*E^c*Erfi[Sqrt[b^2 + d]*x])/(2*d^2
*Sqrt[b^2 + d])

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Rubi [A]  time = 0.151724, antiderivative size = 142, normalized size of antiderivative = 1., number of steps used = 5, number of rules used = 4, integrand size = 17, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.235, Rules used = {6387, 6384, 2204, 2212} \[ \frac{b e^c \text{Erfi}\left (x \sqrt{b^2+d}\right )}{2 d^2 \sqrt{b^2+d}}+\frac{b e^c \text{Erfi}\left (x \sqrt{b^2+d}\right )}{4 d \left (b^2+d\right )^{3/2}}-\frac{b x e^{x^2 \left (b^2+d\right )+c}}{2 \sqrt{\pi } d \left (b^2+d\right )}-\frac{\text{Erfi}(b x) e^{c+d x^2}}{2 d^2}+\frac{x^2 \text{Erfi}(b x) e^{c+d x^2}}{2 d} \]

Antiderivative was successfully verified.

[In]

Int[E^(c + d*x^2)*x^3*Erfi[b*x],x]

[Out]

-(b*E^(c + (b^2 + d)*x^2)*x)/(2*d*(b^2 + d)*Sqrt[Pi]) - (E^(c + d*x^2)*Erfi[b*x])/(2*d^2) + (E^(c + d*x^2)*x^2
*Erfi[b*x])/(2*d) + (b*E^c*Erfi[Sqrt[b^2 + d]*x])/(4*d*(b^2 + d)^(3/2)) + (b*E^c*Erfi[Sqrt[b^2 + d]*x])/(2*d^2
*Sqrt[b^2 + d])

Rule 6387

Int[E^((c_.) + (d_.)*(x_)^2)*Erfi[(a_.) + (b_.)*(x_)]*(x_)^(m_), x_Symbol] :> Simp[(x^(m - 1)*E^(c + d*x^2)*Er
fi[a + b*x])/(2*d), x] + (-Dist[(m - 1)/(2*d), Int[x^(m - 2)*E^(c + d*x^2)*Erfi[a + b*x], x], x] - Dist[b/(d*S
qrt[Pi]), Int[x^(m - 1)*E^(a^2 + c + 2*a*b*x + (b^2 + d)*x^2), x], x]) /; FreeQ[{a, b, c, d}, x] && IGtQ[m, 1]

Rule 6384

Int[E^((c_.) + (d_.)*(x_)^2)*Erfi[(a_.) + (b_.)*(x_)]*(x_), x_Symbol] :> Simp[(E^(c + d*x^2)*Erfi[a + b*x])/(2
*d), x] - Dist[b/(d*Sqrt[Pi]), Int[E^(a^2 + c + 2*a*b*x + (b^2 + d)*x^2), x], x] /; FreeQ[{a, b, c, d}, x]

Rule 2204

Int[(F_)^((a_.) + (b_.)*((c_.) + (d_.)*(x_))^2), x_Symbol] :> Simp[(F^a*Sqrt[Pi]*Erfi[(c + d*x)*Rt[b*Log[F], 2
]])/(2*d*Rt[b*Log[F], 2]), x] /; FreeQ[{F, a, b, c, d}, x] && PosQ[b]

Rule 2212

Int[(F_)^((a_.) + (b_.)*((c_.) + (d_.)*(x_))^(n_))*((c_.) + (d_.)*(x_))^(m_.), x_Symbol] :> Simp[((c + d*x)^(m
- n + 1)*F^(a + b*(c + d*x)^n))/(b*d*n*Log[F]), x] - Dist[(m - n + 1)/(b*n*Log[F]), Int[(c + d*x)^(m - n)*F^(
a + b*(c + d*x)^n), x], x] /; FreeQ[{F, a, b, c, d}, x] && IntegerQ[(2*(m + 1))/n] && LtQ[0, (m + 1)/n, 5] &&
IntegerQ[n] && (LtQ[0, n, m + 1] || LtQ[m, n, 0])

Rubi steps

\begin{align*} \int e^{c+d x^2} x^3 \text{erfi}(b x) \, dx &=\frac{e^{c+d x^2} x^2 \text{erfi}(b x)}{2 d}-\frac{\int e^{c+d x^2} x \text{erfi}(b x) \, dx}{d}-\frac{b \int e^{c+\left (b^2+d\right ) x^2} x^2 \, dx}{d \sqrt{\pi }}\\ &=-\frac{b e^{c+\left (b^2+d\right ) x^2} x}{2 d \left (b^2+d\right ) \sqrt{\pi }}-\frac{e^{c+d x^2} \text{erfi}(b x)}{2 d^2}+\frac{e^{c+d x^2} x^2 \text{erfi}(b x)}{2 d}+\frac{b \int e^{c+\left (b^2+d\right ) x^2} \, dx}{d^2 \sqrt{\pi }}+\frac{b \int e^{c+\left (b^2+d\right ) x^2} \, dx}{2 d \left (b^2+d\right ) \sqrt{\pi }}\\ &=-\frac{b e^{c+\left (b^2+d\right ) x^2} x}{2 d \left (b^2+d\right ) \sqrt{\pi }}-\frac{e^{c+d x^2} \text{erfi}(b x)}{2 d^2}+\frac{e^{c+d x^2} x^2 \text{erfi}(b x)}{2 d}+\frac{b e^c \text{erfi}\left (\sqrt{b^2+d} x\right )}{4 d \left (b^2+d\right )^{3/2}}+\frac{b e^c \text{erfi}\left (\sqrt{b^2+d} x\right )}{2 d^2 \sqrt{b^2+d}}\\ \end{align*}

Mathematica [A]  time = 0.173665, size = 91, normalized size = 0.64 \[ \frac{e^c \left (\frac{\left (2 b^3+3 b d\right ) \text{Erfi}\left (x \sqrt{b^2+d}\right )}{\left (b^2+d\right )^{3/2}}-\frac{2 b d x e^{x^2 \left (b^2+d\right )}}{\sqrt{\pi } \left (b^2+d\right )}+2 e^{d x^2} \left (d x^2-1\right ) \text{Erfi}(b x)\right )}{4 d^2} \]

Antiderivative was successfully verified.

[In]

Integrate[E^(c + d*x^2)*x^3*Erfi[b*x],x]

[Out]

(E^c*((-2*b*d*E^((b^2 + d)*x^2)*x)/((b^2 + d)*Sqrt[Pi]) + 2*E^(d*x^2)*(-1 + d*x^2)*Erfi[b*x] + ((2*b^3 + 3*b*d
)*Erfi[Sqrt[b^2 + d]*x])/(b^2 + d)^(3/2)))/(4*d^2)

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Maple [F]  time = 0.24, size = 0, normalized size = 0. \begin{align*} \int{{\rm e}^{d{x}^{2}+c}}{x}^{3}{\it erfi} \left ( bx \right ) \, dx \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(exp(d*x^2+c)*x^3*erfi(b*x),x)

[Out]

int(exp(d*x^2+c)*x^3*erfi(b*x),x)

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Maxima [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int x^{3} \operatorname{erfi}\left (b x\right ) e^{\left (d x^{2} + c\right )}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(exp(d*x^2+c)*x^3*erfi(b*x),x, algorithm="maxima")

[Out]

integrate(x^3*erfi(b*x)*e^(d*x^2 + c), x)

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Fricas [A]  time = 2.72853, size = 332, normalized size = 2.34 \begin{align*} -\frac{\pi{\left (2 \, b^{3} + 3 \, b d\right )} \sqrt{-b^{2} - d} \operatorname{erf}\left (\sqrt{-b^{2} - d} x\right ) e^{c} + 2 \, \sqrt{\pi }{\left (b^{3} d + b d^{2}\right )} x e^{\left (b^{2} x^{2} + d x^{2} + c\right )} - 2 \,{\left (\pi{\left (b^{4} d + 2 \, b^{2} d^{2} + d^{3}\right )} x^{2} - \pi{\left (b^{4} + 2 \, b^{2} d + d^{2}\right )}\right )} \operatorname{erfi}\left (b x\right ) e^{\left (d x^{2} + c\right )}}{4 \, \pi{\left (b^{4} d^{2} + 2 \, b^{2} d^{3} + d^{4}\right )}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(exp(d*x^2+c)*x^3*erfi(b*x),x, algorithm="fricas")

[Out]

-1/4*(pi*(2*b^3 + 3*b*d)*sqrt(-b^2 - d)*erf(sqrt(-b^2 - d)*x)*e^c + 2*sqrt(pi)*(b^3*d + b*d^2)*x*e^(b^2*x^2 +
d*x^2 + c) - 2*(pi*(b^4*d + 2*b^2*d^2 + d^3)*x^2 - pi*(b^4 + 2*b^2*d + d^2))*erfi(b*x)*e^(d*x^2 + c))/(pi*(b^4
*d^2 + 2*b^2*d^3 + d^4))

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Sympy [F(-1)]  time = 0., size = 0, normalized size = 0. \begin{align*} \text{Timed out} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(exp(d*x**2+c)*x**3*erfi(b*x),x)

[Out]

Timed out

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Giac [F]  time = 0., size = 0, normalized size = 0. \begin{align*} \int x^{3} \operatorname{erfi}\left (b x\right ) e^{\left (d x^{2} + c\right )}\,{d x} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(exp(d*x^2+c)*x^3*erfi(b*x),x, algorithm="giac")

[Out]

integrate(x^3*erfi(b*x)*e^(d*x^2 + c), x)