Integrand size = 18, antiderivative size = 53 \[ \int \frac {\log \left (d \left (b x+c x^2\right )^n\right )}{x} \, dx=-\frac {1}{2} n \log ^2(x)-n \log (x) \log \left (1+\frac {c x}{b}\right )+\log (x) \log \left (d \left (b x+c x^2\right )^n\right )-n \operatorname {PolyLog}\left (2,-\frac {c x}{b}\right ) \]
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Time = 0.08 (sec) , antiderivative size = 53, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.333, Rules used = {2604, 1607, 2404, 2338, 2354, 2438} \[ \int \frac {\log \left (d \left (b x+c x^2\right )^n\right )}{x} \, dx=\log (x) \log \left (d \left (b x+c x^2\right )^n\right )-n \operatorname {PolyLog}\left (2,-\frac {c x}{b}\right )-n \log (x) \log \left (\frac {c x}{b}+1\right )-\frac {1}{2} n \log ^2(x) \]
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Rule 1607
Rule 2338
Rule 2354
Rule 2404
Rule 2438
Rule 2604
Rubi steps \begin{align*} \text {integral}& = \log (x) \log \left (d \left (b x+c x^2\right )^n\right )-n \int \frac {(b+2 c x) \log (x)}{b x+c x^2} \, dx \\ & = \log (x) \log \left (d \left (b x+c x^2\right )^n\right )-n \int \frac {(b+2 c x) \log (x)}{x (b+c x)} \, dx \\ & = \log (x) \log \left (d \left (b x+c x^2\right )^n\right )-n \int \left (\frac {\log (x)}{x}+\frac {c \log (x)}{b+c x}\right ) \, dx \\ & = \log (x) \log \left (d \left (b x+c x^2\right )^n\right )-n \int \frac {\log (x)}{x} \, dx-(c n) \int \frac {\log (x)}{b+c x} \, dx \\ & = -\frac {1}{2} n \log ^2(x)-n \log (x) \log \left (1+\frac {c x}{b}\right )+\log (x) \log \left (d \left (b x+c x^2\right )^n\right )+n \int \frac {\log \left (1+\frac {c x}{b}\right )}{x} \, dx \\ & = -\frac {1}{2} n \log ^2(x)-n \log (x) \log \left (1+\frac {c x}{b}\right )+\log (x) \log \left (d \left (b x+c x^2\right )^n\right )-n \text {Li}_2\left (-\frac {c x}{b}\right ) \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 50, normalized size of antiderivative = 0.94 \[ \int \frac {\log \left (d \left (b x+c x^2\right )^n\right )}{x} \, dx=\log (x) \log \left (d (x (b+c x))^n\right )-n \left (\frac {\log ^2(x)}{2}+\log (x) \log \left (\frac {b+c x}{b}\right )+\operatorname {PolyLog}\left (2,-\frac {c x}{b}\right )\right ) \]
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Time = 0.13 (sec) , antiderivative size = 62, normalized size of antiderivative = 1.17
method | result | size |
parts | \(\ln \left (x \right ) \ln \left (d \left (c \,x^{2}+b x \right )^{n}\right )-n \left (\frac {\ln \left (x \right )^{2}}{2}+c \left (\frac {\operatorname {dilog}\left (\frac {x c +b}{b}\right )}{c}+\frac {\ln \left (x \right ) \ln \left (\frac {x c +b}{b}\right )}{c}\right )\right )\) | \(62\) |
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\[ \int \frac {\log \left (d \left (b x+c x^2\right )^n\right )}{x} \, dx=\int { \frac {\log \left ({\left (c x^{2} + b x\right )}^{n} d\right )}{x} \,d x } \]
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\[ \int \frac {\log \left (d \left (b x+c x^2\right )^n\right )}{x} \, dx=\int \frac {\log {\left (d \left (b x + c x^{2}\right )^{n} \right )}}{x}\, dx \]
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Time = 0.19 (sec) , antiderivative size = 80, normalized size of antiderivative = 1.51 \[ \int \frac {\log \left (d \left (b x+c x^2\right )^n\right )}{x} \, dx=-n \log \left (c x^{2} + b x\right ) \log \left (x\right ) + \frac {1}{2} \, {\left (2 \, \log \left (c x^{2} + b x\right ) \log \left (x\right ) - 2 \, \log \left (\frac {c x}{b} + 1\right ) \log \left (x\right ) - \log \left (x\right )^{2} - 2 \, {\rm Li}_2\left (-\frac {c x}{b}\right )\right )} n + \log \left ({\left (c x^{2} + b x\right )}^{n} d\right ) \log \left (x\right ) \]
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\[ \int \frac {\log \left (d \left (b x+c x^2\right )^n\right )}{x} \, dx=\int { \frac {\log \left ({\left (c x^{2} + b x\right )}^{n} d\right )}{x} \,d x } \]
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Timed out. \[ \int \frac {\log \left (d \left (b x+c x^2\right )^n\right )}{x} \, dx=\int \frac {\ln \left (d\,{\left (c\,x^2+b\,x\right )}^n\right )}{x} \,d x \]
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