Optimal. Leaf size=81 \[ \frac {f^{a+b x+c x^2}}{2 c \log (f)}-\frac {\sqrt {\pi } b f^{a-\frac {b^2}{4 c}} \text {erfi}\left (\frac {\sqrt {\log (f)} (b+2 c x)}{2 \sqrt {c}}\right )}{4 c^{3/2} \sqrt {\log (f)}} \]
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Rubi [A] time = 0.04, antiderivative size = 81, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, integrand size = 14, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.214, Rules used = {2240, 2234, 2204} \[ \frac {f^{a+b x+c x^2}}{2 c \log (f)}-\frac {\sqrt {\pi } b f^{a-\frac {b^2}{4 c}} \text {Erfi}\left (\frac {\sqrt {\log (f)} (b+2 c x)}{2 \sqrt {c}}\right )}{4 c^{3/2} \sqrt {\log (f)}} \]
Antiderivative was successfully verified.
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Rule 2204
Rule 2234
Rule 2240
Rubi steps
\begin {align*} \int f^{a+b x+c x^2} x \, dx &=\frac {f^{a+b x+c x^2}}{2 c \log (f)}-\frac {b \int f^{a+b x+c x^2} \, dx}{2 c}\\ &=\frac {f^{a+b x+c x^2}}{2 c \log (f)}-\frac {\left (b f^{a-\frac {b^2}{4 c}}\right ) \int f^{\frac {(b+2 c x)^2}{4 c}} \, dx}{2 c}\\ &=\frac {f^{a+b x+c x^2}}{2 c \log (f)}-\frac {b 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*}
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Mathematica [A] time = 0.07, size = 81, normalized size = 1.00 \[ \frac {f^{a+b x+c x^2}}{2 c \log (f)}-\frac {\sqrt {\pi } b f^{a-\frac {b^2}{4 c}} \text {erfi}\left (\frac {\sqrt {\log (f)} (b+2 c x)}{2 \sqrt {c}}\right )}{4 c^{3/2} \sqrt {\log (f)}} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.41, size = 73, normalized size = 0.90 \[ \frac {2 \, c f^{c x^{2} + b x + a} + \frac {\sqrt {\pi } \sqrt {-c \log \relax (f)} b \operatorname {erf}\left (\frac {{\left (2 \, c x + b\right )} \sqrt {-c \log \relax (f)}}{2 \, c}\right )}{f^{\frac {b^{2} - 4 \, a c}{4 \, c}}}}{4 \, c^{2} \log \relax (f)} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.44, size = 80, normalized size = 0.99 \[ \frac {\frac {\sqrt {\pi } b \operatorname {erf}\left (-\frac {1}{2} \, \sqrt {-c \log \relax (f)} {\left (2 \, x + \frac {b}{c}\right )}\right ) e^{\left (-\frac {b^{2} \log \relax (f) - 4 \, a c \log \relax (f)}{4 \, c}\right )}}{\sqrt {-c \log \relax (f)}} + \frac {2 \, e^{\left (c x^{2} \log \relax (f) + b x \log \relax (f) + a \log \relax (f)\right )}}{\log \relax (f)}}{4 \, c} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.05, size = 79, normalized size = 0.98 \[ \frac {\sqrt {\pi }\, b \,f^{a} f^{-\frac {b^{2}}{4 c}} \erf \left (\frac {b \ln \relax (f )}{2 \sqrt {-c \ln \relax (f )}}-\sqrt {-c \ln \relax (f )}\, x \right )}{4 \sqrt {-c \ln \relax (f )}\, c}+\frac {f^{a} f^{b x} f^{c \,x^{2}}}{2 c \ln \relax (f )} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 2.03, size = 107, normalized size = 1.32 \[ -\frac {{\left (\frac {\sqrt {\pi } {\left (2 \, c x + b\right )} b {\left (\operatorname {erf}\left (\frac {1}{2} \, \sqrt {-\frac {{\left (2 \, c x + b\right )}^{2} \log \relax (f)}{c}}\right ) - 1\right )} \log \relax (f)^{2}}{\sqrt {-\frac {{\left (2 \, c x + b\right )}^{2} \log \relax (f)}{c}} \left (c \log \relax (f)\right )^{\frac {3}{2}}} - \frac {2 \, c f^{\frac {{\left (2 \, c x + b\right )}^{2}}{4 \, c}} \log \relax (f)}{\left (c \log \relax (f)\right )^{\frac {3}{2}}}\right )} f^{a - \frac {b^{2}}{4 \, c}}}{4 \, \sqrt {c \log \relax (f)}} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 3.57, size = 71, normalized size = 0.88 \[ \frac {f^a\,f^{c\,x^2}\,f^{b\,x}}{2\,c\,\ln \relax (f)}-\frac {b\,f^{a-\frac {b^2}{4\,c}}\,\sqrt {\pi }\,\mathrm {erfi}\left (\frac {\frac {b\,\ln \relax (f)}{2}+c\,x\,\ln \relax (f)}{\sqrt {c\,\ln \relax (f)}}\right )}{4\,c\,\sqrt {c\,\ln \relax (f)}} \]
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 \[ \int f^{a + b x + c x^{2}} x\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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