Integrand size = 11, antiderivative size = 47 \[ \int x^2 (a+b x)^5 \, dx=\frac {a^2 (a+b x)^6}{6 b^3}-\frac {2 a (a+b x)^7}{7 b^3}+\frac {(a+b x)^8}{8 b^3} \]
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Time = 0.01 (sec) , antiderivative size = 47, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 1, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.091, Rules used = {45} \[ \int x^2 (a+b x)^5 \, dx=\frac {a^2 (a+b x)^6}{6 b^3}+\frac {(a+b x)^8}{8 b^3}-\frac {2 a (a+b x)^7}{7 b^3} \]
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Rule 45
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {a^2 (a+b x)^5}{b^2}-\frac {2 a (a+b x)^6}{b^2}+\frac {(a+b x)^7}{b^2}\right ) \, dx \\ & = \frac {a^2 (a+b x)^6}{6 b^3}-\frac {2 a (a+b x)^7}{7 b^3}+\frac {(a+b x)^8}{8 b^3} \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 67, normalized size of antiderivative = 1.43 \[ \int x^2 (a+b x)^5 \, dx=\frac {a^5 x^3}{3}+\frac {5}{4} a^4 b x^4+2 a^3 b^2 x^5+\frac {5}{3} a^2 b^3 x^6+\frac {5}{7} a b^4 x^7+\frac {b^5 x^8}{8} \]
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Time = 0.18 (sec) , antiderivative size = 58, normalized size of antiderivative = 1.23
method | result | size |
gosper | \(\frac {1}{8} b^{5} x^{8}+\frac {5}{7} a \,b^{4} x^{7}+\frac {5}{3} a^{2} b^{3} x^{6}+2 a^{3} b^{2} x^{5}+\frac {5}{4} a^{4} b \,x^{4}+\frac {1}{3} a^{5} x^{3}\) | \(58\) |
default | \(\frac {1}{8} b^{5} x^{8}+\frac {5}{7} a \,b^{4} x^{7}+\frac {5}{3} a^{2} b^{3} x^{6}+2 a^{3} b^{2} x^{5}+\frac {5}{4} a^{4} b \,x^{4}+\frac {1}{3} a^{5} x^{3}\) | \(58\) |
norman | \(\frac {1}{8} b^{5} x^{8}+\frac {5}{7} a \,b^{4} x^{7}+\frac {5}{3} a^{2} b^{3} x^{6}+2 a^{3} b^{2} x^{5}+\frac {5}{4} a^{4} b \,x^{4}+\frac {1}{3} a^{5} x^{3}\) | \(58\) |
risch | \(\frac {1}{8} b^{5} x^{8}+\frac {5}{7} a \,b^{4} x^{7}+\frac {5}{3} a^{2} b^{3} x^{6}+2 a^{3} b^{2} x^{5}+\frac {5}{4} a^{4} b \,x^{4}+\frac {1}{3} a^{5} x^{3}\) | \(58\) |
parallelrisch | \(\frac {1}{8} b^{5} x^{8}+\frac {5}{7} a \,b^{4} x^{7}+\frac {5}{3} a^{2} b^{3} x^{6}+2 a^{3} b^{2} x^{5}+\frac {5}{4} a^{4} b \,x^{4}+\frac {1}{3} a^{5} x^{3}\) | \(58\) |
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none
Time = 0.21 (sec) , antiderivative size = 57, normalized size of antiderivative = 1.21 \[ \int x^2 (a+b x)^5 \, dx=\frac {1}{8} \, b^{5} x^{8} + \frac {5}{7} \, a b^{4} x^{7} + \frac {5}{3} \, a^{2} b^{3} x^{6} + 2 \, a^{3} b^{2} x^{5} + \frac {5}{4} \, a^{4} b x^{4} + \frac {1}{3} \, a^{5} x^{3} \]
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Time = 0.02 (sec) , antiderivative size = 65, normalized size of antiderivative = 1.38 \[ \int x^2 (a+b x)^5 \, dx=\frac {a^{5} x^{3}}{3} + \frac {5 a^{4} b x^{4}}{4} + 2 a^{3} b^{2} x^{5} + \frac {5 a^{2} b^{3} x^{6}}{3} + \frac {5 a b^{4} x^{7}}{7} + \frac {b^{5} x^{8}}{8} \]
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none
Time = 0.20 (sec) , antiderivative size = 57, normalized size of antiderivative = 1.21 \[ \int x^2 (a+b x)^5 \, dx=\frac {1}{8} \, b^{5} x^{8} + \frac {5}{7} \, a b^{4} x^{7} + \frac {5}{3} \, a^{2} b^{3} x^{6} + 2 \, a^{3} b^{2} x^{5} + \frac {5}{4} \, a^{4} b x^{4} + \frac {1}{3} \, a^{5} x^{3} \]
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none
Time = 0.29 (sec) , antiderivative size = 57, normalized size of antiderivative = 1.21 \[ \int x^2 (a+b x)^5 \, dx=\frac {1}{8} \, b^{5} x^{8} + \frac {5}{7} \, a b^{4} x^{7} + \frac {5}{3} \, a^{2} b^{3} x^{6} + 2 \, a^{3} b^{2} x^{5} + \frac {5}{4} \, a^{4} b x^{4} + \frac {1}{3} \, a^{5} x^{3} \]
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Time = 0.02 (sec) , antiderivative size = 57, normalized size of antiderivative = 1.21 \[ \int x^2 (a+b x)^5 \, dx=\frac {a^5\,x^3}{3}+\frac {5\,a^4\,b\,x^4}{4}+2\,a^3\,b^2\,x^5+\frac {5\,a^2\,b^3\,x^6}{3}+\frac {5\,a\,b^4\,x^7}{7}+\frac {b^5\,x^8}{8} \]
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