Integrand size = 29, antiderivative size = 86 \[ \int \frac {\left (a c+(b c+a d) x+b d x^2\right )^3}{(a+b x)^7} \, dx=-\frac {(b c-a d)^3}{3 b^4 (a+b x)^3}-\frac {3 d (b c-a d)^2}{2 b^4 (a+b x)^2}-\frac {3 d^2 (b c-a d)}{b^4 (a+b x)}+\frac {d^3 \log (a+b x)}{b^4} \]
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Time = 0.04 (sec) , antiderivative size = 86, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.069, Rules used = {640, 45} \[ \int \frac {\left (a c+(b c+a d) x+b d x^2\right )^3}{(a+b x)^7} \, dx=-\frac {3 d^2 (b c-a d)}{b^4 (a+b x)}-\frac {3 d (b c-a d)^2}{2 b^4 (a+b x)^2}-\frac {(b c-a d)^3}{3 b^4 (a+b x)^3}+\frac {d^3 \log (a+b x)}{b^4} \]
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Rule 45
Rule 640
Rubi steps \begin{align*} \text {integral}& = \int \frac {(c+d x)^3}{(a+b x)^4} \, dx \\ & = \int \left (\frac {(b c-a d)^3}{b^3 (a+b x)^4}+\frac {3 d (b c-a d)^2}{b^3 (a+b x)^3}+\frac {3 d^2 (b c-a d)}{b^3 (a+b x)^2}+\frac {d^3}{b^3 (a+b x)}\right ) \, dx \\ & = -\frac {(b c-a d)^3}{3 b^4 (a+b x)^3}-\frac {3 d (b c-a d)^2}{2 b^4 (a+b x)^2}-\frac {3 d^2 (b c-a d)}{b^4 (a+b x)}+\frac {d^3 \log (a+b x)}{b^4} \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 80, normalized size of antiderivative = 0.93 \[ \int \frac {\left (a c+(b c+a d) x+b d x^2\right )^3}{(a+b x)^7} \, dx=\frac {-\frac {(b c-a d) \left (11 a^2 d^2+a b d (5 c+27 d x)+b^2 \left (2 c^2+9 c d x+18 d^2 x^2\right )\right )}{(a+b x)^3}+6 d^3 \log (a+b x)}{6 b^4} \]
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Time = 2.52 (sec) , antiderivative size = 115, normalized size of antiderivative = 1.34
method | result | size |
risch | \(\frac {\frac {3 d^{2} \left (a d -b c \right ) x^{2}}{b^{2}}+\frac {3 d \left (3 a^{2} d^{2}-2 a b c d -b^{2} c^{2}\right ) x}{2 b^{3}}+\frac {11 a^{3} d^{3}-6 a^{2} b c \,d^{2}-3 a \,b^{2} c^{2} d -2 b^{3} c^{3}}{6 b^{4}}}{\left (b x +a \right )^{3}}+\frac {d^{3} \ln \left (b x +a \right )}{b^{4}}\) | \(115\) |
default | \(-\frac {-a^{3} d^{3}+3 a^{2} b c \,d^{2}-3 a \,b^{2} c^{2} d +b^{3} c^{3}}{3 b^{4} \left (b x +a \right )^{3}}+\frac {d^{3} \ln \left (b x +a \right )}{b^{4}}-\frac {3 d \left (a^{2} d^{2}-2 a b c d +b^{2} c^{2}\right )}{2 b^{4} \left (b x +a \right )^{2}}+\frac {3 d^{2} \left (a d -b c \right )}{b^{4} \left (b x +a \right )}\) | \(120\) |
parallelrisch | \(\frac {6 \ln \left (b x +a \right ) x^{3} b^{3} d^{3}+18 \ln \left (b x +a \right ) x^{2} a \,b^{2} d^{3}+18 \ln \left (b x +a \right ) x \,a^{2} b \,d^{3}+18 x^{2} a \,b^{2} d^{3}-18 x^{2} b^{3} c \,d^{2}+6 \ln \left (b x +a \right ) a^{3} d^{3}+27 x \,a^{2} b \,d^{3}-18 x a \,b^{2} c \,d^{2}-9 x \,b^{3} c^{2} d +11 a^{3} d^{3}-6 a^{2} b c \,d^{2}-3 a \,b^{2} c^{2} d -2 b^{3} c^{3}}{6 b^{4} \left (b x +a \right )^{3}}\) | \(170\) |
norman | \(\frac {\frac {a \left (22 a^{3} b^{2} d^{3}-15 a^{2} b^{3} c \,d^{2}-6 a \,b^{4} c^{2} d -b^{5} c^{3}\right ) x^{2}}{b^{4}}+\frac {a^{2} \left (10 a^{3} b^{2} d^{3}-6 a^{2} b^{3} c \,d^{2}-3 a \,b^{4} c^{2} d -b^{5} c^{3}\right ) x}{b^{5}}+\frac {a^{3} \left (11 a^{3} b^{2} d^{3}-6 a^{2} b^{3} c \,d^{2}-3 a \,b^{4} c^{2} d -2 b^{5} c^{3}\right )}{6 b^{6}}+\frac {3 \left (a \,b^{2} d^{3}-b^{3} c \,d^{2}\right ) x^{5}}{b}+\frac {3 \left (9 a^{2} b^{2} d^{3}-8 a \,b^{3} c \,d^{2}-b^{4} c^{2} d \right ) x^{4}}{2 b^{2}}+\frac {\left (73 a^{3} b^{2} d^{3}-57 a^{2} b^{3} c \,d^{2}-15 a \,b^{4} c^{2} d -b^{5} c^{3}\right ) x^{3}}{3 b^{3}}}{\left (b x +a \right )^{6}}+\frac {d^{3} \ln \left (b x +a \right )}{b^{4}}\) | \(289\) |
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Leaf count of result is larger than twice the leaf count of optimal. 176 vs. \(2 (82) = 164\).
Time = 0.28 (sec) , antiderivative size = 176, normalized size of antiderivative = 2.05 \[ \int \frac {\left (a c+(b c+a d) x+b d x^2\right )^3}{(a+b x)^7} \, dx=-\frac {2 \, b^{3} c^{3} + 3 \, a b^{2} c^{2} d + 6 \, a^{2} b c d^{2} - 11 \, a^{3} d^{3} + 18 \, {\left (b^{3} c d^{2} - a b^{2} d^{3}\right )} x^{2} + 9 \, {\left (b^{3} c^{2} d + 2 \, a b^{2} c d^{2} - 3 \, a^{2} b d^{3}\right )} x - 6 \, {\left (b^{3} d^{3} x^{3} + 3 \, a b^{2} d^{3} x^{2} + 3 \, a^{2} b d^{3} x + a^{3} d^{3}\right )} \log \left (b x + a\right )}{6 \, {\left (b^{7} x^{3} + 3 \, a b^{6} x^{2} + 3 \, a^{2} b^{5} x + a^{3} b^{4}\right )}} \]
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Time = 0.80 (sec) , antiderivative size = 148, normalized size of antiderivative = 1.72 \[ \int \frac {\left (a c+(b c+a d) x+b d x^2\right )^3}{(a+b x)^7} \, dx=\frac {11 a^{3} d^{3} - 6 a^{2} b c d^{2} - 3 a b^{2} c^{2} d - 2 b^{3} c^{3} + x^{2} \cdot \left (18 a b^{2} d^{3} - 18 b^{3} c d^{2}\right ) + x \left (27 a^{2} b d^{3} - 18 a b^{2} c d^{2} - 9 b^{3} c^{2} d\right )}{6 a^{3} b^{4} + 18 a^{2} b^{5} x + 18 a b^{6} x^{2} + 6 b^{7} x^{3}} + \frac {d^{3} \log {\left (a + b x \right )}}{b^{4}} \]
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Time = 0.21 (sec) , antiderivative size = 142, normalized size of antiderivative = 1.65 \[ \int \frac {\left (a c+(b c+a d) x+b d x^2\right )^3}{(a+b x)^7} \, dx=-\frac {2 \, b^{3} c^{3} + 3 \, a b^{2} c^{2} d + 6 \, a^{2} b c d^{2} - 11 \, a^{3} d^{3} + 18 \, {\left (b^{3} c d^{2} - a b^{2} d^{3}\right )} x^{2} + 9 \, {\left (b^{3} c^{2} d + 2 \, a b^{2} c d^{2} - 3 \, a^{2} b d^{3}\right )} x}{6 \, {\left (b^{7} x^{3} + 3 \, a b^{6} x^{2} + 3 \, a^{2} b^{5} x + a^{3} b^{4}\right )}} + \frac {d^{3} \log \left (b x + a\right )}{b^{4}} \]
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Time = 0.28 (sec) , antiderivative size = 118, normalized size of antiderivative = 1.37 \[ \int \frac {\left (a c+(b c+a d) x+b d x^2\right )^3}{(a+b x)^7} \, dx=\frac {d^{3} \log \left ({\left | b x + a \right |}\right )}{b^{4}} - \frac {18 \, {\left (b^{2} c d^{2} - a b d^{3}\right )} x^{2} + 9 \, {\left (b^{2} c^{2} d + 2 \, a b c d^{2} - 3 \, a^{2} d^{3}\right )} x + \frac {2 \, b^{3} c^{3} + 3 \, a b^{2} c^{2} d + 6 \, a^{2} b c d^{2} - 11 \, a^{3} d^{3}}{b}}{6 \, {\left (b x + a\right )}^{3} b^{3}} \]
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Time = 0.09 (sec) , antiderivative size = 138, normalized size of antiderivative = 1.60 \[ \int \frac {\left (a c+(b c+a d) x+b d x^2\right )^3}{(a+b x)^7} \, dx=\frac {d^3\,\ln \left (a+b\,x\right )}{b^4}-\frac {\frac {-11\,a^3\,d^3+6\,a^2\,b\,c\,d^2+3\,a\,b^2\,c^2\,d+2\,b^3\,c^3}{6\,b^4}+\frac {3\,x\,\left (-3\,a^2\,d^3+2\,a\,b\,c\,d^2+b^2\,c^2\,d\right )}{2\,b^3}-\frac {3\,d^2\,x^2\,\left (a\,d-b\,c\right )}{b^2}}{a^3+3\,a^2\,b\,x+3\,a\,b^2\,x^2+b^3\,x^3} \]
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