Integrand size = 24, antiderivative size = 202 \[ \int \frac {\left (a+b \log \left (c (d+e x)^n\right )\right )^2}{(f+g x)^3} \, dx=-\frac {b e n (d+e x) \left (a+b \log \left (c (d+e x)^n\right )\right )}{(e f-d g)^2 (f+g x)}-\frac {\left (a+b \log \left (c (d+e x)^n\right )\right )^2}{2 g (f+g x)^2}+\frac {b^2 e^2 n^2 \log (f+g x)}{g (e f-d g)^2}-\frac {b e^2 n \left (a+b \log \left (c (d+e x)^n\right )\right ) \log \left (1+\frac {e f-d g}{g (d+e x)}\right )}{g (e f-d g)^2}+\frac {b^2 e^2 n^2 \operatorname {PolyLog}\left (2,-\frac {e f-d g}{g (d+e x)}\right )}{g (e f-d g)^2} \]
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Time = 0.22 (sec) , antiderivative size = 202, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 7, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.292, Rules used = {2445, 2458, 2389, 2379, 2438, 2351, 31} \[ \int \frac {\left (a+b \log \left (c (d+e x)^n\right )\right )^2}{(f+g x)^3} \, dx=-\frac {b e^2 n \log \left (\frac {e f-d g}{g (d+e x)}+1\right ) \left (a+b \log \left (c (d+e x)^n\right )\right )}{g (e f-d g)^2}-\frac {b e n (d+e x) \left (a+b \log \left (c (d+e x)^n\right )\right )}{(f+g x) (e f-d g)^2}-\frac {\left (a+b \log \left (c (d+e x)^n\right )\right )^2}{2 g (f+g x)^2}+\frac {b^2 e^2 n^2 \operatorname {PolyLog}\left (2,-\frac {e f-d g}{g (d+e x)}\right )}{g (e f-d g)^2}+\frac {b^2 e^2 n^2 \log (f+g x)}{g (e f-d g)^2} \]
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Rule 31
Rule 2351
Rule 2379
Rule 2389
Rule 2438
Rule 2445
Rule 2458
Rubi steps \begin{align*} \text {integral}& = -\frac {\left (a+b \log \left (c (d+e x)^n\right )\right )^2}{2 g (f+g x)^2}+\frac {(b e n) \int \frac {a+b \log \left (c (d+e x)^n\right )}{(d+e x) (f+g x)^2} \, dx}{g} \\ & = -\frac {\left (a+b \log \left (c (d+e x)^n\right )\right )^2}{2 g (f+g x)^2}+\frac {(b n) \text {Subst}\left (\int \frac {a+b \log \left (c x^n\right )}{x \left (\frac {e f-d g}{e}+\frac {g x}{e}\right )^2} \, dx,x,d+e x\right )}{g} \\ & = -\frac {\left (a+b \log \left (c (d+e x)^n\right )\right )^2}{2 g (f+g x)^2}-\frac {(b n) \text {Subst}\left (\int \frac {a+b \log \left (c x^n\right )}{\left (\frac {e f-d g}{e}+\frac {g x}{e}\right )^2} \, dx,x,d+e x\right )}{e f-d g}+\frac {(b e n) \text {Subst}\left (\int \frac {a+b \log \left (c x^n\right )}{x \left (\frac {e f-d g}{e}+\frac {g x}{e}\right )} \, dx,x,d+e x\right )}{g (e f-d g)} \\ & = -\frac {b e n (d+e x) \left (a+b \log \left (c (d+e x)^n\right )\right )}{(e f-d g)^2 (f+g x)}-\frac {\left (a+b \log \left (c (d+e x)^n\right )\right )^2}{2 g (f+g x)^2}-\frac {b e^2 n \left (a+b \log \left (c (d+e x)^n\right )\right ) \log \left (1+\frac {e f-d g}{g (d+e x)}\right )}{g (e f-d g)^2}+\frac {\left (b^2 e n^2\right ) \text {Subst}\left (\int \frac {1}{\frac {e f-d g}{e}+\frac {g x}{e}} \, dx,x,d+e x\right )}{(e f-d g)^2}+\frac {\left (b^2 e^2 n^2\right ) \text {Subst}\left (\int \frac {\log \left (1+\frac {e f-d g}{g x}\right )}{x} \, dx,x,d+e x\right )}{g (e f-d g)^2} \\ & = -\frac {b e n (d+e x) \left (a+b \log \left (c (d+e x)^n\right )\right )}{(e f-d g)^2 (f+g x)}-\frac {\left (a+b \log \left (c (d+e x)^n\right )\right )^2}{2 g (f+g x)^2}+\frac {b^2 e^2 n^2 \log (f+g x)}{g (e f-d g)^2}-\frac {b e^2 n \left (a+b \log \left (c (d+e x)^n\right )\right ) \log \left (1+\frac {e f-d g}{g (d+e x)}\right )}{g (e f-d g)^2}+\frac {b^2 e^2 n^2 \text {Li}_2\left (-\frac {e f-d g}{g (d+e x)}\right )}{g (e f-d g)^2} \\ \end{align*}
Time = 0.12 (sec) , antiderivative size = 204, normalized size of antiderivative = 1.01 \[ \int \frac {\left (a+b \log \left (c (d+e x)^n\right )\right )^2}{(f+g x)^3} \, dx=\frac {-\left (a+b \log \left (c (d+e x)^n\right )\right )^2+\frac {e (f+g x) \left (2 b (e f-d g) n \left (a+b \log \left (c (d+e x)^n\right )\right )+e (f+g x) \left (a+b \log \left (c (d+e x)^n\right )\right )^2-2 b^2 e n^2 (f+g x) (\log (d+e x)-\log (f+g x))-2 b e n (f+g x) \left (a+b \log \left (c (d+e x)^n\right )\right ) \log \left (\frac {e (f+g x)}{e f-d g}\right )-2 b^2 e n^2 (f+g x) \operatorname {PolyLog}\left (2,\frac {g (d+e x)}{-e f+d g}\right )\right )}{(e f-d g)^2}}{2 g (f+g x)^2} \]
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Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 1.35 (sec) , antiderivative size = 661, normalized size of antiderivative = 3.27
method | result | size |
risch | \(-\frac {b^{2} \ln \left (\left (e x +d \right )^{n}\right )^{2}}{2 \left (g x +f \right )^{2} g}+\frac {b^{2} n \,e^{2} \ln \left (\left (e x +d \right )^{n}\right ) \ln \left (e x +d \right )}{g \left (d g -e f \right )^{2}}-\frac {b^{2} n e \ln \left (\left (e x +d \right )^{n}\right )}{g \left (d g -e f \right ) \left (g x +f \right )}-\frac {b^{2} n \,e^{2} \ln \left (\left (e x +d \right )^{n}\right ) \ln \left (g x +f \right )}{g \left (d g -e f \right )^{2}}-\frac {b^{2} n^{2} e^{2} \ln \left (e x +d \right )^{2}}{2 g \left (d g -e f \right )^{2}}-\frac {b^{2} n^{2} e^{2} \ln \left (e x +d \right )}{g \left (d g -e f \right )^{2}}+\frac {b^{2} n^{2} e^{2} \ln \left (g x +f \right )}{g \left (d g -e f \right )^{2}}+\frac {b^{2} n^{2} e^{2} \operatorname {dilog}\left (\frac {\left (g x +f \right ) e +d g -e f}{d g -e f}\right )}{g \left (d g -e f \right )^{2}}+\frac {b^{2} n^{2} e^{2} \ln \left (g x +f \right ) \ln \left (\frac {\left (g x +f \right ) e +d g -e f}{d g -e f}\right )}{g \left (d g -e f \right )^{2}}+\left (-i b \pi \,\operatorname {csgn}\left (i c \left (e x +d \right )^{n}\right ) \operatorname {csgn}\left (i c \right ) \operatorname {csgn}\left (i \left (e x +d \right )^{n}\right )+i \pi \,\operatorname {csgn}\left (i c \right ) \operatorname {csgn}\left (i c \left (e x +d \right )^{n}\right )^{2} b +i \pi \,\operatorname {csgn}\left (i \left (e x +d \right )^{n}\right ) \operatorname {csgn}\left (i c \left (e x +d \right )^{n}\right )^{2} b -i \pi \operatorname {csgn}\left (i c \left (e x +d \right )^{n}\right )^{3} b +2 b \ln \left (c \right )+2 a \right ) b \left (-\frac {\ln \left (\left (e x +d \right )^{n}\right )}{2 \left (g x +f \right )^{2} g}+\frac {n e \left (\frac {e \ln \left (e x +d \right )}{\left (d g -e f \right )^{2}}-\frac {1}{\left (d g -e f \right ) \left (g x +f \right )}-\frac {e \ln \left (g x +f \right )}{\left (d g -e f \right )^{2}}\right )}{2 g}\right )-\frac {{\left (-i b \pi \,\operatorname {csgn}\left (i c \left (e x +d \right )^{n}\right ) \operatorname {csgn}\left (i c \right ) \operatorname {csgn}\left (i \left (e x +d \right )^{n}\right )+i \pi \,\operatorname {csgn}\left (i c \right ) \operatorname {csgn}\left (i c \left (e x +d \right )^{n}\right )^{2} b +i \pi \,\operatorname {csgn}\left (i \left (e x +d \right )^{n}\right ) \operatorname {csgn}\left (i c \left (e x +d \right )^{n}\right )^{2} b -i \pi \operatorname {csgn}\left (i c \left (e x +d \right )^{n}\right )^{3} b +2 b \ln \left (c \right )+2 a \right )}^{2}}{8 \left (g x +f \right )^{2} g}\) | \(661\) |
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\[ \int \frac {\left (a+b \log \left (c (d+e x)^n\right )\right )^2}{(f+g x)^3} \, dx=\int { \frac {{\left (b \log \left ({\left (e x + d\right )}^{n} c\right ) + a\right )}^{2}}{{\left (g x + f\right )}^{3}} \,d x } \]
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\[ \int \frac {\left (a+b \log \left (c (d+e x)^n\right )\right )^2}{(f+g x)^3} \, dx=\int \frac {\left (a + b \log {\left (c \left (d + e x\right )^{n} \right )}\right )^{2}}{\left (f + g x\right )^{3}}\, dx \]
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\[ \int \frac {\left (a+b \log \left (c (d+e x)^n\right )\right )^2}{(f+g x)^3} \, dx=\int { \frac {{\left (b \log \left ({\left (e x + d\right )}^{n} c\right ) + a\right )}^{2}}{{\left (g x + f\right )}^{3}} \,d x } \]
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\[ \int \frac {\left (a+b \log \left (c (d+e x)^n\right )\right )^2}{(f+g x)^3} \, dx=\int { \frac {{\left (b \log \left ({\left (e x + d\right )}^{n} c\right ) + a\right )}^{2}}{{\left (g x + f\right )}^{3}} \,d x } \]
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Timed out. \[ \int \frac {\left (a+b \log \left (c (d+e x)^n\right )\right )^2}{(f+g x)^3} \, dx=\int \frac {{\left (a+b\,\ln \left (c\,{\left (d+e\,x\right )}^n\right )\right )}^2}{{\left (f+g\,x\right )}^3} \,d x \]
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