Integrand size = 33, antiderivative size = 85 \[ \int \frac {e^{a+b x+c x^2} (b+2 c x)}{\left (a+b x+c x^2\right )^{5/2}} \, dx=-\frac {2 e^{a+b x+c x^2}}{3 \left (a+b x+c x^2\right )^{3/2}}-\frac {4 e^{a+b x+c x^2}}{3 \sqrt {a+b x+c x^2}}+\frac {4}{3} \sqrt {\pi } \text {erfi}\left (\sqrt {a+b x+c x^2}\right ) \]
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Time = 0.23 (sec) , antiderivative size = 85, 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, 2208, 2211, 2235} \[ \int \frac {e^{a+b x+c x^2} (b+2 c x)}{\left (a+b x+c x^2\right )^{5/2}} \, dx=\frac {4}{3} \sqrt {\pi } \text {erfi}\left (\sqrt {a+b x+c x^2}\right )-\frac {4 e^{a+b x+c x^2}}{3 \sqrt {a+b x+c x^2}}-\frac {2 e^{a+b x+c x^2}}{3 \left (a+b x+c x^2\right )^{3/2}} \]
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Rule 2208
Rule 2211
Rule 2235
Rule 6839
Rubi steps \begin{align*} \text {integral}& = \text {Subst}\left (\int \frac {e^x}{x^{5/2}} \, dx,x,a+b x+c x^2\right ) \\ & = -\frac {2 e^{a+b x+c x^2}}{3 \left (a+b x+c x^2\right )^{3/2}}+\frac {2}{3} \text {Subst}\left (\int \frac {e^x}{x^{3/2}} \, dx,x,a+b x+c x^2\right ) \\ & = -\frac {2 e^{a+b x+c x^2}}{3 \left (a+b x+c x^2\right )^{3/2}}-\frac {4 e^{a+b x+c x^2}}{3 \sqrt {a+b x+c x^2}}+\frac {4}{3} \text {Subst}\left (\int \frac {e^x}{\sqrt {x}} \, dx,x,a+b x+c x^2\right ) \\ & = -\frac {2 e^{a+b x+c x^2}}{3 \left (a+b x+c x^2\right )^{3/2}}-\frac {4 e^{a+b x+c x^2}}{3 \sqrt {a+b x+c x^2}}+\frac {8}{3} \text {Subst}\left (\int e^{x^2} \, dx,x,\sqrt {a+b x+c x^2}\right ) \\ & = -\frac {2 e^{a+b x+c x^2}}{3 \left (a+b x+c x^2\right )^{3/2}}-\frac {4 e^{a+b x+c x^2}}{3 \sqrt {a+b x+c x^2}}+\frac {4}{3} \sqrt {\pi } \text {erfi}\left (\sqrt {a+b x+c x^2}\right ) \\ \end{align*}
Time = 3.15 (sec) , antiderivative size = 77, normalized size of antiderivative = 0.91 \[ \int \frac {e^{a+b x+c x^2} (b+2 c x)}{\left (a+b x+c x^2\right )^{5/2}} \, dx=-\frac {2 \left (e^{a+x (b+c x)} (1+2 (a+x (b+c x)))+2 (-a-x (b+c x))^{3/2} \Gamma \left (\frac {1}{2},-a-x (b+c x)\right )\right )}{3 (a+x (b+c x))^{3/2}} \]
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Time = 0.36 (sec) , antiderivative size = 70, normalized size of antiderivative = 0.82
method | result | size |
derivativedivides | \(-\frac {2 \,{\mathrm e}^{c \,x^{2}+b x +a}}{3 \left (c \,x^{2}+b x +a \right )^{\frac {3}{2}}}+\frac {4 \,\operatorname {erfi}\left (\sqrt {c \,x^{2}+b x +a}\right ) \sqrt {\pi }}{3}-\frac {4 \,{\mathrm e}^{c \,x^{2}+b x +a}}{3 \sqrt {c \,x^{2}+b x +a}}\) | \(70\) |
default | \(-\frac {2 \,{\mathrm e}^{c \,x^{2}+b x +a}}{3 \left (c \,x^{2}+b x +a \right )^{\frac {3}{2}}}+\frac {4 \,\operatorname {erfi}\left (\sqrt {c \,x^{2}+b x +a}\right ) \sqrt {\pi }}{3}-\frac {4 \,{\mathrm e}^{c \,x^{2}+b x +a}}{3 \sqrt {c \,x^{2}+b x +a}}\) | \(70\) |
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\[ \int \frac {e^{a+b x+c x^2} (b+2 c x)}{\left (a+b x+c x^2\right )^{5/2}} \, dx=\int { \frac {{\left (2 \, c x + b\right )} e^{\left (c x^{2} + b x + a\right )}}{{\left (c x^{2} + b x + a\right )}^{\frac {5}{2}}} \,d x } \]
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Time = 17.14 (sec) , antiderivative size = 105, normalized size of antiderivative = 1.24 \[ \int \frac {e^{a+b x+c x^2} (b+2 c x)}{\left (a+b x+c x^2\right )^{5/2}} \, dx=\frac {\left (\frac {4 \sqrt {\pi } \operatorname {erfc}{\left (\sqrt {- a - b x - c x^{2}} \right )}}{3} - \frac {\left (- \frac {4 a}{3} - \frac {4 b x}{3} - \frac {4 c x^{2}}{3} - \frac {2}{3}\right ) e^{a + b x + c x^{2}}}{\left (- a - b x - c x^{2}\right )^{\frac {3}{2}}}\right ) \left (- a - b x - c x^{2}\right )^{\frac {5}{2}}}{\left (a + b x + c x^{2}\right )^{\frac {5}{2}}} \]
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\[ \int \frac {e^{a+b x+c x^2} (b+2 c x)}{\left (a+b x+c x^2\right )^{5/2}} \, dx=\int { \frac {{\left (2 \, c x + b\right )} e^{\left (c x^{2} + b x + a\right )}}{{\left (c x^{2} + b x + a\right )}^{\frac {5}{2}}} \,d x } \]
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\[ \int \frac {e^{a+b x+c x^2} (b+2 c x)}{\left (a+b x+c x^2\right )^{5/2}} \, dx=\int { \frac {{\left (2 \, c x + b\right )} e^{\left (c x^{2} + b x + a\right )}}{{\left (c x^{2} + b x + a\right )}^{\frac {5}{2}}} \,d x } \]
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Time = 1.02 (sec) , antiderivative size = 104, normalized size of antiderivative = 1.22 \[ \int \frac {e^{a+b x+c x^2} (b+2 c x)}{\left (a+b x+c x^2\right )^{5/2}} \, dx=-\frac {{\mathrm {e}}^{c\,x^2+b\,x+a}\,\left (2\,c\,x^2+2\,b\,x+2\,a\right )+4\,{\mathrm {e}}^{c\,x^2+b\,x+a}\,{\left (c\,x^2+b\,x+a\right )}^2-4\,\sqrt {\pi }\,\mathrm {erfc}\left (\sqrt {-c\,x^2-b\,x-a}\right )\,{\left (-c\,x^2-b\,x-a\right )}^{5/2}}{3\,{\left (c\,x^2+b\,x+a\right )}^{5/2}} \]
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