Integrand size = 33, antiderivative size = 82 \[ \int e^{a+b x+c x^2} (b+2 c x) \left (a+b x+c x^2\right )^{3/2} \, dx=-\frac {3}{2} e^{a+b x+c x^2} \sqrt {a+b x+c x^2}+e^{a+b x+c x^2} \left (a+b x+c x^2\right )^{3/2}+\frac {3}{4} \sqrt {\pi } \text {erfi}\left (\sqrt {a+b x+c x^2}\right ) \]
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Time = 0.22 (sec) , antiderivative size = 82, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 4, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.121, Rules used = {6839, 2207, 2211, 2235} \[ \int e^{a+b x+c x^2} (b+2 c x) \left (a+b x+c x^2\right )^{3/2} \, dx=\frac {3}{4} \sqrt {\pi } \text {erfi}\left (\sqrt {a+b x+c x^2}\right )+e^{a+b x+c x^2} \left (a+b x+c x^2\right )^{3/2}-\frac {3}{2} e^{a+b x+c x^2} \sqrt {a+b x+c x^2} \]
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Rule 2207
Rule 2211
Rule 2235
Rule 6839
Rubi steps \begin{align*} \text {integral}& = \text {Subst}\left (\int e^x x^{3/2} \, dx,x,a+b x+c x^2\right ) \\ & = e^{a+b x+c x^2} \left (a+b x+c x^2\right )^{3/2}-\frac {3}{2} \text {Subst}\left (\int e^x \sqrt {x} \, dx,x,a+b x+c x^2\right ) \\ & = -\frac {3}{2} e^{a+b x+c x^2} \sqrt {a+b x+c x^2}+e^{a+b x+c x^2} \left (a+b x+c x^2\right )^{3/2}+\frac {3}{4} \text {Subst}\left (\int \frac {e^x}{\sqrt {x}} \, dx,x,a+b x+c x^2\right ) \\ & = -\frac {3}{2} e^{a+b x+c x^2} \sqrt {a+b x+c x^2}+e^{a+b x+c x^2} \left (a+b x+c x^2\right )^{3/2}+\frac {3}{2} \text {Subst}\left (\int e^{x^2} \, dx,x,\sqrt {a+b x+c x^2}\right ) \\ & = -\frac {3}{2} e^{a+b x+c x^2} \sqrt {a+b x+c x^2}+e^{a+b x+c x^2} \left (a+b x+c x^2\right )^{3/2}+\frac {3}{4} \sqrt {\pi } \text {erfi}\left (\sqrt {a+b x+c x^2}\right ) \\ \end{align*}
Time = 1.79 (sec) , antiderivative size = 46, normalized size of antiderivative = 0.56 \[ \int e^{a+b x+c x^2} (b+2 c x) \left (a+b x+c x^2\right )^{3/2} \, dx=\frac {\sqrt {-a-x (b+c x)} \Gamma \left (\frac {5}{2},-a-x (b+c x)\right )}{\sqrt {a+x (b+c x)}} \]
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Time = 0.49 (sec) , antiderivative size = 69, normalized size of antiderivative = 0.84
method | result | size |
derivativedivides | \({\mathrm e}^{c \,x^{2}+b x +a} \left (c \,x^{2}+b x +a \right )^{\frac {3}{2}}+\frac {3 \,\operatorname {erfi}\left (\sqrt {c \,x^{2}+b x +a}\right ) \sqrt {\pi }}{4}-\frac {3 \,{\mathrm e}^{c \,x^{2}+b x +a} \sqrt {c \,x^{2}+b x +a}}{2}\) | \(69\) |
default | \({\mathrm e}^{c \,x^{2}+b x +a} \left (c \,x^{2}+b x +a \right )^{\frac {3}{2}}+\frac {3 \,\operatorname {erfi}\left (\sqrt {c \,x^{2}+b x +a}\right ) \sqrt {\pi }}{4}-\frac {3 \,{\mathrm e}^{c \,x^{2}+b x +a} \sqrt {c \,x^{2}+b x +a}}{2}\) | \(69\) |
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\[ \int e^{a+b x+c x^2} (b+2 c x) \left (a+b x+c x^2\right )^{3/2} \, dx=\int { {\left (c x^{2} + b x + a\right )}^{\frac {3}{2}} {\left (2 \, c x + b\right )} e^{\left (c x^{2} + b x + a\right )} \,d x } \]
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Time = 42.72 (sec) , antiderivative size = 94, normalized size of antiderivative = 1.15 \[ \int e^{a+b x+c x^2} (b+2 c x) \left (a+b x+c x^2\right )^{3/2} \, dx=\frac {\left (- \sqrt {- a - b x - c x^{2}} \left (a + b x + c x^{2} - \frac {3}{2}\right ) e^{a + b x + c x^{2}} + \frac {3 \sqrt {\pi } \operatorname {erfc}{\left (\sqrt {- a - b x - c x^{2}} \right )}}{4}\right ) \left (a + b x + c x^{2}\right )^{\frac {3}{2}}}{\left (- a - b x - c x^{2}\right )^{\frac {3}{2}}} \]
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\[ \int e^{a+b x+c x^2} (b+2 c x) \left (a+b x+c x^2\right )^{3/2} \, dx=\int { {\left (c x^{2} + b x + a\right )}^{\frac {3}{2}} {\left (2 \, c x + b\right )} e^{\left (c x^{2} + b x + a\right )} \,d x } \]
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Result contains complex when optimal does not.
Time = 0.32 (sec) , antiderivative size = 63, normalized size of antiderivative = 0.77 \[ \int e^{a+b x+c x^2} (b+2 c x) \left (a+b x+c x^2\right )^{3/2} \, dx=\frac {1}{2} \, {\left (2 \, {\left (c x^{2} + b x + a\right )}^{\frac {3}{2}} - 3 \, \sqrt {c x^{2} + b x + a}\right )} e^{\left (c x^{2} + b x + a\right )} + \frac {3}{4} i \, \sqrt {\pi } \operatorname {erf}\left (-i \, \sqrt {c x^{2} + b x + a}\right ) \]
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Time = 0.60 (sec) , antiderivative size = 102, normalized size of antiderivative = 1.24 \[ \int e^{a+b x+c x^2} (b+2 c x) \left (a+b x+c x^2\right )^{3/2} \, dx=\frac {3\,\sqrt {\pi }\,\mathrm {erfc}\left (\sqrt {-c\,x^2-b\,x-a}\right )\,{\left (c\,x^2+b\,x+a\right )}^{3/2}}{4\,{\left (-c\,x^2-b\,x-a\right )}^{3/2}}-\frac {3\,{\mathrm {e}}^{b\,x}\,{\mathrm {e}}^a\,{\mathrm {e}}^{c\,x^2}\,\sqrt {c\,x^2+b\,x+a}}{2}+{\mathrm {e}}^{b\,x}\,{\mathrm {e}}^a\,{\mathrm {e}}^{c\,x^2}\,{\left (c\,x^2+b\,x+a\right )}^{3/2} \]
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