Optimal. Leaf size=64 \[ \frac{(b B-2 A c) \tanh ^{-1}\left (\frac{b+2 c x}{\sqrt{b^2-4 a c}}\right )}{c \sqrt{b^2-4 a c}}+\frac{B \log \left (a+b x+c x^2\right )}{2 c} \]
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Rubi [A] time = 0.0389597, antiderivative size = 64, normalized size of antiderivative = 1., number of steps used = 4, number of rules used = 4, integrand size = 18, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.222, Rules used = {634, 618, 206, 628} \[ \frac{(b B-2 A c) \tanh ^{-1}\left (\frac{b+2 c x}{\sqrt{b^2-4 a c}}\right )}{c \sqrt{b^2-4 a c}}+\frac{B \log \left (a+b x+c x^2\right )}{2 c} \]
Antiderivative was successfully verified.
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Rule 634
Rule 618
Rule 206
Rule 628
Rubi steps
\begin{align*} \int \frac{A+B x}{a+b x+c x^2} \, dx &=\frac{B \int \frac{b+2 c x}{a+b x+c x^2} \, dx}{2 c}+\frac{(-b B+2 A c) \int \frac{1}{a+b x+c x^2} \, dx}{2 c}\\ &=\frac{B \log \left (a+b x+c x^2\right )}{2 c}-\frac{(-b B+2 A c) \operatorname{Subst}\left (\int \frac{1}{b^2-4 a c-x^2} \, dx,x,b+2 c x\right )}{c}\\ &=\frac{(b B-2 A c) \tanh ^{-1}\left (\frac{b+2 c x}{\sqrt{b^2-4 a c}}\right )}{c \sqrt{b^2-4 a c}}+\frac{B \log \left (a+b x+c x^2\right )}{2 c}\\ \end{align*}
Mathematica [A] time = 0.0605093, size = 66, normalized size = 1.03 \[ \frac{B \log (a+x (b+c x))-\frac{2 (b B-2 A c) \tan ^{-1}\left (\frac{b+2 c x}{\sqrt{4 a c-b^2}}\right )}{\sqrt{4 a c-b^2}}}{2 c} \]
Antiderivative was successfully verified.
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Maple [A] time = 0.002, size = 93, normalized size = 1.5 \begin{align*}{\frac{B\ln \left ( c{x}^{2}+bx+a \right ) }{2\,c}}+2\,{\frac{A}{\sqrt{4\,ac-{b}^{2}}}\arctan \left ({\frac{2\,cx+b}{\sqrt{4\,ac-{b}^{2}}}} \right ) }-{\frac{bB}{c}\arctan \left ({(2\,cx+b){\frac{1}{\sqrt{4\,ac-{b}^{2}}}}} \right ){\frac{1}{\sqrt{4\,ac-{b}^{2}}}}} \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 = 1.37421, size = 471, normalized size = 7.36 \begin{align*} \left [-\frac{{\left (B b - 2 \, A c\right )} \sqrt{b^{2} - 4 \, a c} \log \left (\frac{2 \, c^{2} x^{2} + 2 \, b c x + b^{2} - 2 \, a c - \sqrt{b^{2} - 4 \, a c}{\left (2 \, c x + b\right )}}{c x^{2} + b x + a}\right ) -{\left (B b^{2} - 4 \, B a c\right )} \log \left (c x^{2} + b x + a\right )}{2 \,{\left (b^{2} c - 4 \, a c^{2}\right )}}, \frac{2 \,{\left (B b - 2 \, A c\right )} \sqrt{-b^{2} + 4 \, a c} \arctan \left (-\frac{\sqrt{-b^{2} + 4 \, a c}{\left (2 \, c x + b\right )}}{b^{2} - 4 \, a c}\right ) +{\left (B b^{2} - 4 \, B a c\right )} \log \left (c x^{2} + b x + a\right )}{2 \,{\left (b^{2} c - 4 \, a c^{2}\right )}}\right ] \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Sympy [B] time = 0.649333, size = 280, normalized size = 4.38 \begin{align*} \left (\frac{B}{2 c} - \frac{\left (- 2 A c + B b\right ) \sqrt{- 4 a c + b^{2}}}{2 c \left (4 a c - b^{2}\right )}\right ) \log{\left (x + \frac{- A b + 2 B a - 4 a c \left (\frac{B}{2 c} - \frac{\left (- 2 A c + B b\right ) \sqrt{- 4 a c + b^{2}}}{2 c \left (4 a c - b^{2}\right )}\right ) + b^{2} \left (\frac{B}{2 c} - \frac{\left (- 2 A c + B b\right ) \sqrt{- 4 a c + b^{2}}}{2 c \left (4 a c - b^{2}\right )}\right )}{- 2 A c + B b} \right )} + \left (\frac{B}{2 c} + \frac{\left (- 2 A c + B b\right ) \sqrt{- 4 a c + b^{2}}}{2 c \left (4 a c - b^{2}\right )}\right ) \log{\left (x + \frac{- A b + 2 B a - 4 a c \left (\frac{B}{2 c} + \frac{\left (- 2 A c + B b\right ) \sqrt{- 4 a c + b^{2}}}{2 c \left (4 a c - b^{2}\right )}\right ) + b^{2} \left (\frac{B}{2 c} + \frac{\left (- 2 A c + B b\right ) \sqrt{- 4 a c + b^{2}}}{2 c \left (4 a c - b^{2}\right )}\right )}{- 2 A c + B b} \right )} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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Giac [A] time = 1.10795, size = 85, normalized size = 1.33 \begin{align*} \frac{B \log \left (c x^{2} + b x + a\right )}{2 \, c} - \frac{{\left (B b - 2 \, A c\right )} \arctan \left (\frac{2 \, c x + b}{\sqrt{-b^{2} + 4 \, a c}}\right )}{\sqrt{-b^{2} + 4 \, a c} c} \end{align*}
Verification of antiderivative is not currently implemented for this CAS.
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