Optimal. Leaf size=90 \[ \frac{\sqrt{\pi } f^{a-\frac{b^2}{4 c}} (2 c d-b e) \text{Erfi}\left (\frac{\sqrt{\log (f)} (b+2 c x)}{2 \sqrt{c}}\right )}{4 c^{3/2} \sqrt{\log (f)}}+\frac{e f^{a+b x+c x^2}}{2 c \log (f)} \]
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Rubi [A] time = 0.0411925, antiderivative size = 90, normalized size of antiderivative = 1., number of steps used = 3, number of rules used = 3, integrand size = 18, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.167, Rules used = {2240, 2234, 2204} \[ \frac{\sqrt{\pi } f^{a-\frac{b^2}{4 c}} (2 c d-b e) \text{Erfi}\left (\frac{\sqrt{\log (f)} (b+2 c x)}{2 \sqrt{c}}\right )}{4 c^{3/2} \sqrt{\log (f)}}+\frac{e f^{a+b x+c x^2}}{2 c \log (f)} \]
Antiderivative was successfully verified.
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Rule 2240
Rule 2234
Rule 2204
Rubi steps
\begin{align*} \int f^{a+b x+c x^2} (d+e x) \, dx &=\frac{e f^{a+b x+c x^2}}{2 c \log (f)}-\frac{(-2 c d+b e) \int f^{a+b x+c x^2} \, dx}{2 c}\\ &=\frac{e f^{a+b x+c x^2}}{2 c \log (f)}+\frac{\left ((2 c d-b e) f^{a-\frac{b^2}{4 c}}\right ) \int f^{\frac{(b+2 c x)^2}{4 c}} \, dx}{2 c}\\ &=\frac{e f^{a+b x+c x^2}}{2 c \log (f)}+\frac{(2 c d-b e) f^{a-\frac{b^2}{4 c}} \sqrt{\pi } \text{erfi}\left (\frac{(b+2 c x) \sqrt{\log (f)}}{2 \sqrt{c}}\right )}{4 c^{3/2} \sqrt{\log (f)}}\\ \end{align*}
Mathematica [A] time = 0.1029, size = 96, normalized size = 1.07 \[ \frac{f^{a-\frac{b^2}{4 c}} \left (\sqrt{\pi } \sqrt{\log (f)} (2 c d-b e) \text{Erfi}\left (\frac{\sqrt{\log (f)} (b+2 c x)}{2 \sqrt{c}}\right )+2 \sqrt{c} e f^{\frac{(b+2 c x)^2}{4 c}}\right )}{4 c^{3/2} \log (f)} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.033, size = 131, normalized size = 1.5 \begin{align*} -{\frac{d\sqrt{\pi }{f}^{a}}{2}{f}^{-{\frac{{b}^{2}}{4\,c}}}{\it Erf} \left ( -\sqrt{-c\ln \left ( f \right ) }x+{\frac{b\ln \left ( f \right ) }{2}{\frac{1}{\sqrt{-c\ln \left ( f \right ) }}}} \right ){\frac{1}{\sqrt{-c\ln \left ( f \right ) }}}}+{\frac{e{f}^{c{x}^{2}}{f}^{bx}{f}^{a}}{2\,c\ln \left ( f \right ) }}+{\frac{be\sqrt{\pi }{f}^{a}}{4\,c}{f}^{-{\frac{{b}^{2}}{4\,c}}}{\it Erf} \left ( -\sqrt{-c\ln \left ( f \right ) }x+{\frac{b\ln \left ( f \right ) }{2}{\frac{1}{\sqrt{-c\ln \left ( f \right ) }}}} \right ){\frac{1}{\sqrt{-c\ln \left ( f \right ) }}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [B] time = 1.14236, size = 216, normalized size = 2.4 \begin{align*} -\frac{{\left (\frac{\sqrt{\pi }{\left (2 \, c x + b\right )} b{\left (\operatorname{erf}\left (\frac{1}{2} \, \sqrt{-\frac{{\left (2 \, c x + b\right )}^{2} \log \left (f\right )}{c}}\right ) - 1\right )} \log \left (f\right )^{2}}{\sqrt{-\frac{{\left (2 \, c x + b\right )}^{2} \log \left (f\right )}{c}} \left (c \log \left (f\right )\right )^{\frac{3}{2}}} - \frac{2 \, c f^{\frac{{\left (2 \, c x + b\right )}^{2}}{4 \, c}} \log \left (f\right )}{\left (c \log \left (f\right )\right )^{\frac{3}{2}}}\right )} e f^{a - \frac{b^{2}}{4 \, c}}}{4 \, \sqrt{c \log \left (f\right )}} + \frac{\sqrt{\pi } d f^{a} \operatorname{erf}\left (\sqrt{-c \log \left (f\right )} x - \frac{b \log \left (f\right )}{2 \, \sqrt{-c \log \left (f\right )}}\right )}{2 \, \sqrt{-c \log \left (f\right )} f^{\frac{b^{2}}{4 \, c}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 1.56755, size = 203, normalized size = 2.26 \begin{align*} \frac{2 \, c e f^{c x^{2} + b x + a} - \frac{\sqrt{\pi }{\left (2 \, c d - b e\right )} \sqrt{-c \log \left (f\right )} \operatorname{erf}\left (\frac{{\left (2 \, c x + b\right )} \sqrt{-c \log \left (f\right )}}{2 \, c}\right )}{f^{\frac{b^{2} - 4 \, a c}{4 \, c}}}}{4 \, c^{2} \log \left (f\right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [F] time = 0., size = 0, normalized size = 0. \begin{align*} \int f^{a + b x + c x^{2}} \left (d + e x\right )\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.25363, size = 184, normalized size = 2.04 \begin{align*} -\frac{\sqrt{\pi } d \operatorname{erf}\left (-\frac{1}{2} \, \sqrt{-c \log \left (f\right )}{\left (2 \, x + \frac{b}{c}\right )}\right ) e^{\left (-\frac{b^{2} \log \left (f\right ) - 4 \, a c \log \left (f\right )}{4 \, c}\right )}}{2 \, \sqrt{-c \log \left (f\right )}} + \frac{\frac{\sqrt{\pi } b \operatorname{erf}\left (-\frac{1}{2} \, \sqrt{-c \log \left (f\right )}{\left (2 \, x + \frac{b}{c}\right )}\right ) e^{\left (-\frac{b^{2} \log \left (f\right ) - 4 \, a c \log \left (f\right ) - 4 \, c}{4 \, c}\right )}}{\sqrt{-c \log \left (f\right )}} + \frac{2 \, e^{\left (c x^{2} \log \left (f\right ) + b x \log \left (f\right ) + a \log \left (f\right ) + 1\right )}}{\log \left (f\right )}}{4 \, c} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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