Integrand size = 21, antiderivative size = 148 \[ \int \frac {x^3 \left (a+b \log \left (c x^n\right )\right )}{d+e x} \, dx=\frac {a d^2 x}{e^3}-\frac {b d^2 n x}{e^3}+\frac {b d n x^2}{4 e^2}-\frac {b n x^3}{9 e}+\frac {b d^2 x \log \left (c x^n\right )}{e^3}-\frac {d x^2 \left (a+b \log \left (c x^n\right )\right )}{2 e^2}+\frac {x^3 \left (a+b \log \left (c x^n\right )\right )}{3 e}-\frac {d^3 \left (a+b \log \left (c x^n\right )\right ) \log \left (1+\frac {e x}{d}\right )}{e^4}-\frac {b d^3 n \operatorname {PolyLog}\left (2,-\frac {e x}{d}\right )}{e^4} \]
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Time = 0.11 (sec) , antiderivative size = 148, normalized size of antiderivative = 1.00, number of steps used = 8, number of rules used = 6, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.286, Rules used = {45, 2393, 2332, 2341, 2354, 2438} \[ \int \frac {x^3 \left (a+b \log \left (c x^n\right )\right )}{d+e x} \, dx=-\frac {d^3 \log \left (\frac {e x}{d}+1\right ) \left (a+b \log \left (c x^n\right )\right )}{e^4}-\frac {d x^2 \left (a+b \log \left (c x^n\right )\right )}{2 e^2}+\frac {x^3 \left (a+b \log \left (c x^n\right )\right )}{3 e}+\frac {a d^2 x}{e^3}+\frac {b d^2 x \log \left (c x^n\right )}{e^3}-\frac {b d^3 n \operatorname {PolyLog}\left (2,-\frac {e x}{d}\right )}{e^4}-\frac {b d^2 n x}{e^3}+\frac {b d n x^2}{4 e^2}-\frac {b n x^3}{9 e} \]
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Rule 45
Rule 2332
Rule 2341
Rule 2354
Rule 2393
Rule 2438
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {d^2 \left (a+b \log \left (c x^n\right )\right )}{e^3}-\frac {d x \left (a+b \log \left (c x^n\right )\right )}{e^2}+\frac {x^2 \left (a+b \log \left (c x^n\right )\right )}{e}-\frac {d^3 \left (a+b \log \left (c x^n\right )\right )}{e^3 (d+e x)}\right ) \, dx \\ & = \frac {d^2 \int \left (a+b \log \left (c x^n\right )\right ) \, dx}{e^3}-\frac {d^3 \int \frac {a+b \log \left (c x^n\right )}{d+e x} \, dx}{e^3}-\frac {d \int x \left (a+b \log \left (c x^n\right )\right ) \, dx}{e^2}+\frac {\int x^2 \left (a+b \log \left (c x^n\right )\right ) \, dx}{e} \\ & = \frac {a d^2 x}{e^3}+\frac {b d n x^2}{4 e^2}-\frac {b n x^3}{9 e}-\frac {d x^2 \left (a+b \log \left (c x^n\right )\right )}{2 e^2}+\frac {x^3 \left (a+b \log \left (c x^n\right )\right )}{3 e}-\frac {d^3 \left (a+b \log \left (c x^n\right )\right ) \log \left (1+\frac {e x}{d}\right )}{e^4}+\frac {\left (b d^2\right ) \int \log \left (c x^n\right ) \, dx}{e^3}+\frac {\left (b d^3 n\right ) \int \frac {\log \left (1+\frac {e x}{d}\right )}{x} \, dx}{e^4} \\ & = \frac {a d^2 x}{e^3}-\frac {b d^2 n x}{e^3}+\frac {b d n x^2}{4 e^2}-\frac {b n x^3}{9 e}+\frac {b d^2 x \log \left (c x^n\right )}{e^3}-\frac {d x^2 \left (a+b \log \left (c x^n\right )\right )}{2 e^2}+\frac {x^3 \left (a+b \log \left (c x^n\right )\right )}{3 e}-\frac {d^3 \left (a+b \log \left (c x^n\right )\right ) \log \left (1+\frac {e x}{d}\right )}{e^4}-\frac {b d^3 n \text {Li}_2\left (-\frac {e x}{d}\right )}{e^4} \\ \end{align*}
Time = 0.05 (sec) , antiderivative size = 142, normalized size of antiderivative = 0.96 \[ \int \frac {x^3 \left (a+b \log \left (c x^n\right )\right )}{d+e x} \, dx=\frac {36 a d^2 e x-36 b d^2 e n x-18 a d e^2 x^2+9 b d e^2 n x^2+12 a e^3 x^3-4 b e^3 n x^3-36 a d^3 \log \left (1+\frac {e x}{d}\right )+6 b \log \left (c x^n\right ) \left (e x \left (6 d^2-3 d e x+2 e^2 x^2\right )-6 d^3 \log \left (1+\frac {e x}{d}\right )\right )-36 b d^3 n \operatorname {PolyLog}\left (2,-\frac {e x}{d}\right )}{36 e^4} \]
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Result contains higher order function than in optimal. Order 9 vs. order 4.
Time = 0.67 (sec) , antiderivative size = 272, normalized size of antiderivative = 1.84
method | result | size |
risch | \(\frac {b \ln \left (x^{n}\right ) x^{3}}{3 e}-\frac {b \ln \left (x^{n}\right ) d \,x^{2}}{2 e^{2}}+\frac {b \ln \left (x^{n}\right ) x \,d^{2}}{e^{3}}-\frac {b \ln \left (x^{n}\right ) d^{3} \ln \left (e x +d \right )}{e^{4}}-\frac {b n \,x^{3}}{9 e}+\frac {b d n \,x^{2}}{4 e^{2}}-\frac {b \,d^{2} n x}{e^{3}}-\frac {49 b n \,d^{3}}{36 e^{4}}+\frac {b n \,d^{3} \ln \left (e x +d \right ) \ln \left (-\frac {e x}{d}\right )}{e^{4}}+\frac {b n \,d^{3} \operatorname {dilog}\left (-\frac {e x}{d}\right )}{e^{4}}+\left (-\frac {i b \pi \,\operatorname {csgn}\left (i c \right ) \operatorname {csgn}\left (i x^{n}\right ) \operatorname {csgn}\left (i c \,x^{n}\right )}{2}+\frac {i b \pi \,\operatorname {csgn}\left (i c \right ) \operatorname {csgn}\left (i c \,x^{n}\right )^{2}}{2}+\frac {i b \pi \,\operatorname {csgn}\left (i x^{n}\right ) \operatorname {csgn}\left (i c \,x^{n}\right )^{2}}{2}-\frac {i b \pi \operatorname {csgn}\left (i c \,x^{n}\right )^{3}}{2}+b \ln \left (c \right )+a \right ) \left (\frac {\frac {1}{3} e^{2} x^{3}-\frac {1}{2} d e \,x^{2}+d^{2} x}{e^{3}}-\frac {d^{3} \ln \left (e x +d \right )}{e^{4}}\right )\) | \(272\) |
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\[ \int \frac {x^3 \left (a+b \log \left (c x^n\right )\right )}{d+e x} \, dx=\int { \frac {{\left (b \log \left (c x^{n}\right ) + a\right )} x^{3}}{e x + d} \,d x } \]
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Time = 16.24 (sec) , antiderivative size = 267, normalized size of antiderivative = 1.80 \[ \int \frac {x^3 \left (a+b \log \left (c x^n\right )\right )}{d+e x} \, dx=- \frac {a d^{3} \left (\begin {cases} \frac {x}{d} & \text {for}\: e = 0 \\\frac {\log {\left (d + e x \right )}}{e} & \text {otherwise} \end {cases}\right )}{e^{3}} + \frac {a d^{2} x}{e^{3}} - \frac {a d x^{2}}{2 e^{2}} + \frac {a x^{3}}{3 e} + \frac {b d^{3} n \left (\begin {cases} \frac {x}{d} & \text {for}\: e = 0 \\\frac {\begin {cases} - \operatorname {Li}_{2}\left (\frac {e x e^{i \pi }}{d}\right ) & \text {for}\: \frac {1}{\left |{x}\right |} < 1 \wedge \left |{x}\right | < 1 \\\log {\left (d \right )} \log {\left (x \right )} - \operatorname {Li}_{2}\left (\frac {e x e^{i \pi }}{d}\right ) & \text {for}\: \left |{x}\right | < 1 \\- \log {\left (d \right )} \log {\left (\frac {1}{x} \right )} - \operatorname {Li}_{2}\left (\frac {e x e^{i \pi }}{d}\right ) & \text {for}\: \frac {1}{\left |{x}\right |} < 1 \\- {G_{2, 2}^{2, 0}\left (\begin {matrix} & 1, 1 \\0, 0 & \end {matrix} \middle | {x} \right )} \log {\left (d \right )} + {G_{2, 2}^{0, 2}\left (\begin {matrix} 1, 1 & \\ & 0, 0 \end {matrix} \middle | {x} \right )} \log {\left (d \right )} - \operatorname {Li}_{2}\left (\frac {e x e^{i \pi }}{d}\right ) & \text {otherwise} \end {cases}}{e} & \text {otherwise} \end {cases}\right )}{e^{3}} - \frac {b d^{3} \left (\begin {cases} \frac {x}{d} & \text {for}\: e = 0 \\\frac {\log {\left (d + e x \right )}}{e} & \text {otherwise} \end {cases}\right ) \log {\left (c x^{n} \right )}}{e^{3}} - \frac {b d^{2} n x}{e^{3}} + \frac {b d^{2} x \log {\left (c x^{n} \right )}}{e^{3}} + \frac {b d n x^{2}}{4 e^{2}} - \frac {b d x^{2} \log {\left (c x^{n} \right )}}{2 e^{2}} - \frac {b n x^{3}}{9 e} + \frac {b x^{3} \log {\left (c x^{n} \right )}}{3 e} \]
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\[ \int \frac {x^3 \left (a+b \log \left (c x^n\right )\right )}{d+e x} \, dx=\int { \frac {{\left (b \log \left (c x^{n}\right ) + a\right )} x^{3}}{e x + d} \,d x } \]
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\[ \int \frac {x^3 \left (a+b \log \left (c x^n\right )\right )}{d+e x} \, dx=\int { \frac {{\left (b \log \left (c x^{n}\right ) + a\right )} x^{3}}{e x + d} \,d x } \]
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Timed out. \[ \int \frac {x^3 \left (a+b \log \left (c x^n\right )\right )}{d+e x} \, dx=\int \frac {x^3\,\left (a+b\,\ln \left (c\,x^n\right )\right )}{d+e\,x} \,d x \]
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