Integrand size = 22, antiderivative size = 45 \[ \int \frac {a+b x+c x^2}{(b d+2 c d x)^8} \, dx=\frac {b^2-4 a c}{56 c^2 d^8 (b+2 c x)^7}-\frac {1}{40 c^2 d^8 (b+2 c x)^5} \]
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Time = 0.02 (sec) , antiderivative size = 45, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.045, Rules used = {697} \[ \int \frac {a+b x+c x^2}{(b d+2 c d x)^8} \, dx=\frac {b^2-4 a c}{56 c^2 d^8 (b+2 c x)^7}-\frac {1}{40 c^2 d^8 (b+2 c x)^5} \]
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Rule 697
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {-b^2+4 a c}{4 c d^8 (b+2 c x)^8}+\frac {1}{4 c d^8 (b+2 c x)^6}\right ) \, dx \\ & = \frac {b^2-4 a c}{56 c^2 d^8 (b+2 c x)^7}-\frac {1}{40 c^2 d^8 (b+2 c x)^5} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 39, normalized size of antiderivative = 0.87 \[ \int \frac {a+b x+c x^2}{(b d+2 c d x)^8} \, dx=\frac {5 \left (b^2-4 a c\right )-7 (b+2 c x)^2}{280 c^2 d^8 (b+2 c x)^7} \]
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Time = 2.18 (sec) , antiderivative size = 38, normalized size of antiderivative = 0.84
method | result | size |
gosper | \(-\frac {14 c^{2} x^{2}+14 b c x +10 a c +b^{2}}{140 \left (2 c x +b \right )^{7} d^{8} c^{2}}\) | \(38\) |
risch | \(\frac {-\frac {x^{2}}{10}-\frac {b x}{10 c}-\frac {10 a c +b^{2}}{140 c^{2}}}{d^{8} \left (2 c x +b \right )^{7}}\) | \(39\) |
default | \(\frac {-\frac {4 a c -b^{2}}{56 c^{2} \left (2 c x +b \right )^{7}}-\frac {1}{40 c^{2} \left (2 c x +b \right )^{5}}}{d^{8}}\) | \(42\) |
norman | \(\frac {\frac {a x}{b d}+\frac {\left (12 a c +b^{2}\right ) x^{2}}{2 b^{2} d}+\frac {16 c^{4} \left (10 a c +b^{2}\right ) x^{6}}{5 b^{6} d}+\frac {24 c^{3} \left (10 a c +b^{2}\right ) x^{5}}{5 b^{5} d}+\frac {4 c^{2} \left (10 a c +b^{2}\right ) x^{4}}{b^{4} d}+\frac {2 c \left (10 a c +b^{2}\right ) x^{3}}{b^{3} d}+\frac {32 c^{5} \left (10 a c +b^{2}\right ) x^{7}}{35 b^{7} d}}{d^{7} \left (2 c x +b \right )^{7}}\) | \(150\) |
parallelrisch | \(\frac {640 x^{7} a \,c^{6}+64 x^{7} b^{2} c^{5}+2240 x^{6} a b \,c^{5}+224 x^{6} b^{3} c^{4}+3360 x^{5} a \,b^{2} c^{4}+336 x^{5} b^{4} c^{3}+2800 a \,b^{3} c^{3} x^{4}+280 x^{4} b^{5} c^{2}+1400 c^{2} x^{3} a \,b^{4}+140 x^{3} b^{6} c +420 x^{2} a \,b^{5} c +35 x^{2} b^{7}+70 x a \,b^{6}}{70 b^{7} d^{8} \left (2 c x +b \right )^{7}}\) | \(151\) |
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Leaf count of result is larger than twice the leaf count of optimal. 127 vs. \(2 (41) = 82\).
Time = 0.60 (sec) , antiderivative size = 127, normalized size of antiderivative = 2.82 \[ \int \frac {a+b x+c x^2}{(b d+2 c d x)^8} \, dx=-\frac {14 \, c^{2} x^{2} + 14 \, b c x + b^{2} + 10 \, a c}{140 \, {\left (128 \, c^{9} d^{8} x^{7} + 448 \, b c^{8} d^{8} x^{6} + 672 \, b^{2} c^{7} d^{8} x^{5} + 560 \, b^{3} c^{6} d^{8} x^{4} + 280 \, b^{4} c^{5} d^{8} x^{3} + 84 \, b^{5} c^{4} d^{8} x^{2} + 14 \, b^{6} c^{3} d^{8} x + b^{7} c^{2} d^{8}\right )}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 136 vs. \(2 (42) = 84\).
Time = 0.48 (sec) , antiderivative size = 136, normalized size of antiderivative = 3.02 \[ \int \frac {a+b x+c x^2}{(b d+2 c d x)^8} \, dx=\frac {- 10 a c - b^{2} - 14 b c x - 14 c^{2} x^{2}}{140 b^{7} c^{2} d^{8} + 1960 b^{6} c^{3} d^{8} x + 11760 b^{5} c^{4} d^{8} x^{2} + 39200 b^{4} c^{5} d^{8} x^{3} + 78400 b^{3} c^{6} d^{8} x^{4} + 94080 b^{2} c^{7} d^{8} x^{5} + 62720 b c^{8} d^{8} x^{6} + 17920 c^{9} d^{8} x^{7}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 127 vs. \(2 (41) = 82\).
Time = 0.21 (sec) , antiderivative size = 127, normalized size of antiderivative = 2.82 \[ \int \frac {a+b x+c x^2}{(b d+2 c d x)^8} \, dx=-\frac {14 \, c^{2} x^{2} + 14 \, b c x + b^{2} + 10 \, a c}{140 \, {\left (128 \, c^{9} d^{8} x^{7} + 448 \, b c^{8} d^{8} x^{6} + 672 \, b^{2} c^{7} d^{8} x^{5} + 560 \, b^{3} c^{6} d^{8} x^{4} + 280 \, b^{4} c^{5} d^{8} x^{3} + 84 \, b^{5} c^{4} d^{8} x^{2} + 14 \, b^{6} c^{3} d^{8} x + b^{7} c^{2} d^{8}\right )}} \]
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none
Time = 0.26 (sec) , antiderivative size = 37, normalized size of antiderivative = 0.82 \[ \int \frac {a+b x+c x^2}{(b d+2 c d x)^8} \, dx=-\frac {14 \, c^{2} x^{2} + 14 \, b c x + b^{2} + 10 \, a c}{140 \, {\left (2 \, c x + b\right )}^{7} c^{2} d^{8}} \]
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Time = 10.08 (sec) , antiderivative size = 127, normalized size of antiderivative = 2.82 \[ \int \frac {a+b x+c x^2}{(b d+2 c d x)^8} \, dx=-\frac {\frac {b^2+10\,a\,c}{140\,c^2}+\frac {x^2}{10}+\frac {b\,x}{10\,c}}{b^7\,d^8+14\,b^6\,c\,d^8\,x+84\,b^5\,c^2\,d^8\,x^2+280\,b^4\,c^3\,d^8\,x^3+560\,b^3\,c^4\,d^8\,x^4+672\,b^2\,c^5\,d^8\,x^5+448\,b\,c^6\,d^8\,x^6+128\,c^7\,d^8\,x^7} \]
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