Optimal. Leaf size=49 \[ \frac {(a+x (b+c)) \log ^2(a+x (b+c))}{b+c}-\frac {2 (a+x (b+c)) \log (a+x (b+c))}{b+c}+2 x \]
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Rubi [A] time = 0.03, antiderivative size = 49, normalized size of antiderivative = 1.00, number of steps used = 4, number of rules used = 4, integrand size = 11, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.364, Rules used = {2444, 2389, 2296, 2295} \[ \frac {(a+x (b+c)) \log ^2(a+x (b+c))}{b+c}-\frac {2 (a+x (b+c)) \log (a+x (b+c))}{b+c}+2 x \]
Antiderivative was successfully verified.
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Rule 2295
Rule 2296
Rule 2389
Rule 2444
Rubi steps
\begin {align*} \int \log ^2(a+b x+c x) \, dx &=\int \log ^2(a+(b+c) x) \, dx\\ &=\frac {\operatorname {Subst}\left (\int \log ^2(x) \, dx,x,a+(b+c) x\right )}{b+c}\\ &=\frac {(a+(b+c) x) \log ^2(a+(b+c) x)}{b+c}-\frac {2 \operatorname {Subst}(\int \log (x) \, dx,x,a+(b+c) x)}{b+c}\\ &=2 x-\frac {2 (a+(b+c) x) \log (a+(b+c) x)}{b+c}+\frac {(a+(b+c) x) \log ^2(a+(b+c) x)}{b+c}\\ \end {align*}
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Mathematica [A] time = 0.01, size = 48, normalized size = 0.98 \[ \frac {(a+x (b+c)) \log ^2(a+x (b+c))-2 (a+x (b+c)) \log (a+x (b+c))+2 x (b+c)}{b+c} \]
Antiderivative was successfully verified.
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fricas [A] time = 0.47, size = 48, normalized size = 0.98 \[ \frac {{\left ({\left (b + c\right )} x + a\right )} \log \left ({\left (b + c\right )} x + a\right )^{2} + 2 \, {\left (b + c\right )} x - 2 \, {\left ({\left (b + c\right )} x + a\right )} \log \left ({\left (b + c\right )} x + a\right )}{b + c} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 0.17, size = 65, normalized size = 1.33 \[ \frac {{\left (b x + c x + a\right )} \log \left (b x + c x + a\right )^{2}}{b + c} - \frac {2 \, {\left (b x + c x + a\right )} \log \left (b x + c x + a\right )}{b + c} + \frac {2 \, {\left (b x + c x + a\right )}}{b + c} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [B] time = 0.04, size = 131, normalized size = 2.67 \[ \frac {b x \ln \left (a +\left (b +c \right ) x \right )^{2}}{b +c}+\frac {c x \ln \left (a +\left (b +c \right ) x \right )^{2}}{b +c}+\frac {a \ln \left (a +\left (b +c \right ) x \right )^{2}}{b +c}-\frac {2 b x \ln \left (a +\left (b +c \right ) x \right )}{b +c}-\frac {2 c x \ln \left (a +\left (b +c \right ) x \right )}{b +c}-\frac {2 a \ln \left (a +\left (b +c \right ) x \right )}{b +c}+\frac {2 b x}{b +c}+\frac {2 c x}{b +c}+\frac {2 a}{b +c} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.69, size = 38, normalized size = 0.78 \[ \frac {{\left (b x + c x + a\right )} {\left (\log \left (b x + c x + a\right )^{2} - 2 \, \log \left (b x + c x + a\right ) + 2\right )}}{b + c} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.36, size = 94, normalized size = 1.92 \[ \frac {2\,b\,x+2\,c\,x-2\,a\,\ln \left (a+b\,x+c\,x\right )+a\,{\ln \left (a+b\,x+c\,x\right )}^2+b\,x\,{\ln \left (a+b\,x+c\,x\right )}^2+c\,x\,{\ln \left (a+b\,x+c\,x\right )}^2-2\,b\,x\,\ln \left (a+b\,x+c\,x\right )-2\,c\,x\,\ln \left (a+b\,x+c\,x\right )}{b+c} \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.50, size = 63, normalized size = 1.29 \[ - 2 x \log {\left (a + b x + c x \right )} + \left (2 b + 2 c\right ) \left (- \frac {a \log {\left (a + x \left (b + c\right ) \right )}}{\left (b + c\right )^{2}} + \frac {x}{b + c}\right ) + \frac {\left (a + b x + c x\right ) \log {\left (a + b x + c x \right )}^{2}}{b + c} \]
Verification of antiderivative is not currently implemented for this CAS.
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