Optimal. Leaf size=116 \[ \frac{\tanh ^{-1}\left (\frac{b+2 c x}{2 \sqrt{c} \sqrt{a+b x+c x^2}}\right ) \left (-4 c (a f+b e)+3 b^2 f+8 c^2 d\right )}{8 c^{5/2}}+\frac{\sqrt{a+b x+c x^2} (4 c e-3 b f)}{4 c^2}+\frac{f x \sqrt{a+b x+c x^2}}{2 c} \]
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Rubi [A] time = 0.110769, antiderivative size = 116, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 25, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.16, Rules used = {1661, 640, 621, 206} \[ \frac{\tanh ^{-1}\left (\frac{b+2 c x}{2 \sqrt{c} \sqrt{a+b x+c x^2}}\right ) \left (-4 c (a f+b e)+3 b^2 f+8 c^2 d\right )}{8 c^{5/2}}+\frac{\sqrt{a+b x+c x^2} (4 c e-3 b f)}{4 c^2}+\frac{f x \sqrt{a+b x+c x^2}}{2 c} \]
Antiderivative was successfully verified.
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Rule 1661
Rule 640
Rule 621
Rule 206
Rubi steps
\begin{align*} \int \frac{d+e x+f x^2}{\sqrt{a+b x+c x^2}} \, dx &=\frac{f x \sqrt{a+b x+c x^2}}{2 c}+\frac{\int \frac{2 c d-a f+\frac{1}{2} (4 c e-3 b f) x}{\sqrt{a+b x+c x^2}} \, dx}{2 c}\\ &=\frac{(4 c e-3 b f) \sqrt{a+b x+c x^2}}{4 c^2}+\frac{f x \sqrt{a+b x+c x^2}}{2 c}+\frac{\left (2 c (2 c d-a f)-\frac{1}{2} b (4 c e-3 b f)\right ) \int \frac{1}{\sqrt{a+b x+c x^2}} \, dx}{4 c^2}\\ &=\frac{(4 c e-3 b f) \sqrt{a+b x+c x^2}}{4 c^2}+\frac{f x \sqrt{a+b x+c x^2}}{2 c}+\frac{\left (2 c (2 c d-a f)-\frac{1}{2} b (4 c e-3 b f)\right ) \operatorname{Subst}\left (\int \frac{1}{4 c-x^2} \, dx,x,\frac{b+2 c x}{\sqrt{a+b x+c x^2}}\right )}{2 c^2}\\ &=\frac{(4 c e-3 b f) \sqrt{a+b x+c x^2}}{4 c^2}+\frac{f x \sqrt{a+b x+c x^2}}{2 c}+\frac{\left (8 c^2 d+3 b^2 f-4 c (b e+a f)\right ) \tanh ^{-1}\left (\frac{b+2 c x}{2 \sqrt{c} \sqrt{a+b x+c x^2}}\right )}{8 c^{5/2}}\\ \end{align*}
Mathematica [A] time = 0.150978, size = 96, normalized size = 0.83 \[ \frac{\tanh ^{-1}\left (\frac{b+2 c x}{2 \sqrt{c} \sqrt{a+x (b+c x)}}\right ) \left (-4 c (a f+b e)+3 b^2 f+8 c^2 d\right )}{8 c^{5/2}}+\frac{\sqrt{a+x (b+c x)} (-3 b f+4 c e+2 c f x)}{4 c^2} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.062, size = 185, normalized size = 1.6 \begin{align*}{\frac{fx}{2\,c}\sqrt{c{x}^{2}+bx+a}}-{\frac{3\,bf}{4\,{c}^{2}}\sqrt{c{x}^{2}+bx+a}}+{\frac{3\,{b}^{2}f}{8}\ln \left ({ \left ({\frac{b}{2}}+cx \right ){\frac{1}{\sqrt{c}}}}+\sqrt{c{x}^{2}+bx+a} \right ){c}^{-{\frac{5}{2}}}}-{\frac{af}{2}\ln \left ({ \left ({\frac{b}{2}}+cx \right ){\frac{1}{\sqrt{c}}}}+\sqrt{c{x}^{2}+bx+a} \right ){c}^{-{\frac{3}{2}}}}+{\frac{e}{c}\sqrt{c{x}^{2}+bx+a}}-{\frac{be}{2}\ln \left ({ \left ({\frac{b}{2}}+cx \right ){\frac{1}{\sqrt{c}}}}+\sqrt{c{x}^{2}+bx+a} \right ){c}^{-{\frac{3}{2}}}}+{d\ln \left ({ \left ({\frac{b}{2}}+cx \right ){\frac{1}{\sqrt{c}}}}+\sqrt{c{x}^{2}+bx+a} \right ){\frac{1}{\sqrt{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 = 1.92911, size = 549, normalized size = 4.73 \begin{align*} \left [-\frac{{\left (8 \, c^{2} d - 4 \, b c e +{\left (3 \, b^{2} - 4 \, a c\right )} f\right )} \sqrt{c} \log \left (-8 \, c^{2} x^{2} - 8 \, b c x - b^{2} + 4 \, \sqrt{c x^{2} + b x + a}{\left (2 \, c x + b\right )} \sqrt{c} - 4 \, a c\right ) - 4 \,{\left (2 \, c^{2} f x + 4 \, c^{2} e - 3 \, b c f\right )} \sqrt{c x^{2} + b x + a}}{16 \, c^{3}}, -\frac{{\left (8 \, c^{2} d - 4 \, b c e +{\left (3 \, b^{2} - 4 \, a c\right )} f\right )} \sqrt{-c} \arctan \left (\frac{\sqrt{c x^{2} + b x + a}{\left (2 \, c x + b\right )} \sqrt{-c}}{2 \,{\left (c^{2} x^{2} + b c x + a c\right )}}\right ) - 2 \,{\left (2 \, c^{2} f x + 4 \, c^{2} e - 3 \, b c f\right )} \sqrt{c x^{2} + b x + a}}{8 \, c^{3}}\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 \frac{d + e x + f x^{2}}{\sqrt{a + b x + c x^{2}}}\, dx \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.29089, size = 132, normalized size = 1.14 \begin{align*} \frac{1}{4} \, \sqrt{c x^{2} + b x + a}{\left (\frac{2 \, f x}{c} - \frac{3 \, b f - 4 \, c e}{c^{2}}\right )} - \frac{{\left (8 \, c^{2} d + 3 \, b^{2} f - 4 \, a c f - 4 \, b c e\right )} \log \left ({\left | -2 \,{\left (\sqrt{c} x - \sqrt{c x^{2} + b x + a}\right )} \sqrt{c} - b \right |}\right )}{8 \, c^{\frac{5}{2}}} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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