Integrand size = 11, antiderivative size = 47 \[ \int x^2 (a+b x)^7 \, dx=\frac {a^2 (a+b x)^8}{8 b^3}-\frac {2 a (a+b x)^9}{9 b^3}+\frac {(a+b x)^{10}}{10 b^3} \]
[Out]
Time = 0.02 (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} \[ \int x^2 (a+b x)^7 \, dx=\frac {a^2 (a+b x)^8}{8 b^3}+\frac {(a+b x)^{10}}{10 b^3}-\frac {2 a (a+b x)^9}{9 b^3} \]
[In]
[Out]
Rule 45
Rubi steps \begin{align*} \text {integral}& = \int \left (\frac {a^2 (a+b x)^7}{b^2}-\frac {2 a (a+b x)^8}{b^2}+\frac {(a+b x)^9}{b^2}\right ) \, dx \\ & = \frac {a^2 (a+b x)^8}{8 b^3}-\frac {2 a (a+b x)^9}{9 b^3}+\frac {(a+b x)^{10}}{10 b^3} \\ \end{align*}
Time = 0.00 (sec) , antiderivative size = 93, normalized size of antiderivative = 1.98 \[ \int x^2 (a+b x)^7 \, dx=\frac {a^7 x^3}{3}+\frac {7}{4} a^6 b x^4+\frac {21}{5} a^5 b^2 x^5+\frac {35}{6} a^4 b^3 x^6+5 a^3 b^4 x^7+\frac {21}{8} a^2 b^5 x^8+\frac {7}{9} a b^6 x^9+\frac {b^7 x^{10}}{10} \]
[In]
[Out]
Time = 0.17 (sec) , antiderivative size = 80, normalized size of antiderivative = 1.70
method | result | size |
gosper | \(\frac {1}{10} b^{7} x^{10}+\frac {7}{9} a \,b^{6} x^{9}+\frac {21}{8} a^{2} b^{5} x^{8}+5 a^{3} b^{4} x^{7}+\frac {35}{6} a^{4} b^{3} x^{6}+\frac {21}{5} a^{5} b^{2} x^{5}+\frac {7}{4} a^{6} b \,x^{4}+\frac {1}{3} a^{7} x^{3}\) | \(80\) |
default | \(\frac {1}{10} b^{7} x^{10}+\frac {7}{9} a \,b^{6} x^{9}+\frac {21}{8} a^{2} b^{5} x^{8}+5 a^{3} b^{4} x^{7}+\frac {35}{6} a^{4} b^{3} x^{6}+\frac {21}{5} a^{5} b^{2} x^{5}+\frac {7}{4} a^{6} b \,x^{4}+\frac {1}{3} a^{7} x^{3}\) | \(80\) |
norman | \(\frac {1}{10} b^{7} x^{10}+\frac {7}{9} a \,b^{6} x^{9}+\frac {21}{8} a^{2} b^{5} x^{8}+5 a^{3} b^{4} x^{7}+\frac {35}{6} a^{4} b^{3} x^{6}+\frac {21}{5} a^{5} b^{2} x^{5}+\frac {7}{4} a^{6} b \,x^{4}+\frac {1}{3} a^{7} x^{3}\) | \(80\) |
risch | \(\frac {1}{10} b^{7} x^{10}+\frac {7}{9} a \,b^{6} x^{9}+\frac {21}{8} a^{2} b^{5} x^{8}+5 a^{3} b^{4} x^{7}+\frac {35}{6} a^{4} b^{3} x^{6}+\frac {21}{5} a^{5} b^{2} x^{5}+\frac {7}{4} a^{6} b \,x^{4}+\frac {1}{3} a^{7} x^{3}\) | \(80\) |
parallelrisch | \(\frac {1}{10} b^{7} x^{10}+\frac {7}{9} a \,b^{6} x^{9}+\frac {21}{8} a^{2} b^{5} x^{8}+5 a^{3} b^{4} x^{7}+\frac {35}{6} a^{4} b^{3} x^{6}+\frac {21}{5} a^{5} b^{2} x^{5}+\frac {7}{4} a^{6} b \,x^{4}+\frac {1}{3} a^{7} x^{3}\) | \(80\) |
[In]
[Out]
none
Time = 0.22 (sec) , antiderivative size = 79, normalized size of antiderivative = 1.68 \[ \int x^2 (a+b x)^7 \, dx=\frac {1}{10} \, b^{7} x^{10} + \frac {7}{9} \, a b^{6} x^{9} + \frac {21}{8} \, a^{2} b^{5} x^{8} + 5 \, a^{3} b^{4} x^{7} + \frac {35}{6} \, a^{4} b^{3} x^{6} + \frac {21}{5} \, a^{5} b^{2} x^{5} + \frac {7}{4} \, a^{6} b x^{4} + \frac {1}{3} \, a^{7} x^{3} \]
[In]
[Out]
Leaf count of result is larger than twice the leaf count of optimal. 92 vs. \(2 (41) = 82\).
Time = 0.03 (sec) , antiderivative size = 92, normalized size of antiderivative = 1.96 \[ \int x^2 (a+b x)^7 \, dx=\frac {a^{7} x^{3}}{3} + \frac {7 a^{6} b x^{4}}{4} + \frac {21 a^{5} b^{2} x^{5}}{5} + \frac {35 a^{4} b^{3} x^{6}}{6} + 5 a^{3} b^{4} x^{7} + \frac {21 a^{2} b^{5} x^{8}}{8} + \frac {7 a b^{6} x^{9}}{9} + \frac {b^{7} x^{10}}{10} \]
[In]
[Out]
none
Time = 0.21 (sec) , antiderivative size = 79, normalized size of antiderivative = 1.68 \[ \int x^2 (a+b x)^7 \, dx=\frac {1}{10} \, b^{7} x^{10} + \frac {7}{9} \, a b^{6} x^{9} + \frac {21}{8} \, a^{2} b^{5} x^{8} + 5 \, a^{3} b^{4} x^{7} + \frac {35}{6} \, a^{4} b^{3} x^{6} + \frac {21}{5} \, a^{5} b^{2} x^{5} + \frac {7}{4} \, a^{6} b x^{4} + \frac {1}{3} \, a^{7} x^{3} \]
[In]
[Out]
none
Time = 0.29 (sec) , antiderivative size = 79, normalized size of antiderivative = 1.68 \[ \int x^2 (a+b x)^7 \, dx=\frac {1}{10} \, b^{7} x^{10} + \frac {7}{9} \, a b^{6} x^{9} + \frac {21}{8} \, a^{2} b^{5} x^{8} + 5 \, a^{3} b^{4} x^{7} + \frac {35}{6} \, a^{4} b^{3} x^{6} + \frac {21}{5} \, a^{5} b^{2} x^{5} + \frac {7}{4} \, a^{6} b x^{4} + \frac {1}{3} \, a^{7} x^{3} \]
[In]
[Out]
Time = 0.06 (sec) , antiderivative size = 31, normalized size of antiderivative = 0.66 \[ \int x^2 (a+b x)^7 \, dx=\frac {{\left (a+b\,x\right )}^8\,\left (8\,a^2-64\,a\,b\,x+288\,b^2\,x^2\right )}{2880\,b^3} \]
[In]
[Out]