Optimal. Leaf size=56 \[ \frac{2 \sqrt{c} \tan ^{-1}\left (\frac{2 \sqrt{c} \sqrt{a+b x+c x^2}}{\sqrt{b^2-4 a c}}\right )}{e \sqrt{b^2-4 a c}} \]
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Rubi [A] time = 0.0530509, antiderivative size = 56, normalized size of antiderivative = 1., number of steps used = 2, number of rules used = 2, integrand size = 30, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.067, Rules used = {688, 205} \[ \frac{2 \sqrt{c} \tan ^{-1}\left (\frac{2 \sqrt{c} \sqrt{a+b x+c x^2}}{\sqrt{b^2-4 a c}}\right )}{e \sqrt{b^2-4 a c}} \]
Antiderivative was successfully verified.
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Rule 688
Rule 205
Rubi steps
\begin{align*} \int \frac{1}{\left (\frac{b e}{2 c}+e x\right ) \sqrt{a+b x+c x^2}} \, dx &=(4 c) \operatorname{Subst}\left (\int \frac{1}{b^2 e-4 a c e+4 c e x^2} \, dx,x,\sqrt{a+b x+c x^2}\right )\\ &=\frac{2 \sqrt{c} \tan ^{-1}\left (\frac{2 \sqrt{c} \sqrt{a+b x+c x^2}}{\sqrt{b^2-4 a c}}\right )}{\sqrt{b^2-4 a c} e}\\ \end{align*}
Mathematica [A] time = 0.040288, size = 55, normalized size = 0.98 \[ \frac{2 \sqrt{c} \tan ^{-1}\left (\frac{2 \sqrt{c} \sqrt{a+x (b+c x)}}{\sqrt{b^2-4 a c}}\right )}{e \sqrt{b^2-4 a c}} \]
Antiderivative was successfully verified.
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Maple [B] time = 0.193, size = 98, normalized size = 1.8 \begin{align*} -2\,{\frac{1}{e}\ln \left ({ \left ( 1/2\,{\frac{4\,ac-{b}^{2}}{c}}+1/2\,\sqrt{{\frac{4\,ac-{b}^{2}}{c}}}\sqrt{4\, \left ( x+1/2\,{\frac{b}{c}} \right ) ^{2}c+{\frac{4\,ac-{b}^{2}}{c}}} \right ) \left ( x+1/2\,{\frac{b}{c}} \right ) ^{-1}} \right ){\frac{1}{\sqrt{{\frac{4\,ac-{b}^{2}}{c}}}}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Maxima [F(-2)] time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: ValueError} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Fricas [A] time = 2.29252, size = 385, normalized size = 6.88 \begin{align*} \left [\frac{\sqrt{-\frac{c}{b^{2} - 4 \, a c}} \log \left (-\frac{4 \, c^{2} x^{2} + 4 \, b c x - b^{2} + 8 \, a c + 4 \, \sqrt{c x^{2} + b x + a}{\left (b^{2} - 4 \, a c\right )} \sqrt{-\frac{c}{b^{2} - 4 \, a c}}}{4 \, c^{2} x^{2} + 4 \, b c x + b^{2}}\right )}{e}, \frac{2 \, \sqrt{\frac{c}{b^{2} - 4 \, a c}} \arctan \left (-\frac{\sqrt{c x^{2} + b x + a}{\left (b^{2} - 4 \, a c\right )} \sqrt{\frac{c}{b^{2} - 4 \, a c}}}{2 \,{\left (c^{2} x^{2} + b c x + a c\right )}}\right )}{e}\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*} \frac{2 c \int \frac{1}{b \sqrt{a + b x + c x^{2}} + 2 c x \sqrt{a + b x + c x^{2}}}\, dx}{e} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.14539, size = 88, normalized size = 1.57 \begin{align*} \frac{4 \, c \arctan \left (-\frac{2 \,{\left (\sqrt{c} x - \sqrt{c x^{2} + b x + a}\right )} c + b \sqrt{c}}{\sqrt{b^{2} c - 4 \, a c^{2}}}\right ) e^{\left (-1\right )}}{\sqrt{b^{2} c - 4 \, a c^{2}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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