Integrand size = 20, antiderivative size = 60 \[ \int x^2 \left (c x^2\right )^{3/2} (a+b x)^2 \, dx=\frac {1}{6} a^2 c x^5 \sqrt {c x^2}+\frac {2}{7} a b c x^6 \sqrt {c x^2}+\frac {1}{8} b^2 c x^7 \sqrt {c x^2} \]
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Time = 0.01 (sec) , antiderivative size = 60, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.100, Rules used = {15, 45} \[ \int x^2 \left (c x^2\right )^{3/2} (a+b x)^2 \, dx=\frac {1}{6} a^2 c x^5 \sqrt {c x^2}+\frac {2}{7} a b c x^6 \sqrt {c x^2}+\frac {1}{8} b^2 c x^7 \sqrt {c x^2} \]
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Rule 15
Rule 45
Rubi steps \begin{align*} \text {integral}& = \frac {\left (c \sqrt {c x^2}\right ) \int x^5 (a+b x)^2 \, dx}{x} \\ & = \frac {\left (c \sqrt {c x^2}\right ) \int \left (a^2 x^5+2 a b x^6+b^2 x^7\right ) \, dx}{x} \\ & = \frac {1}{6} a^2 c x^5 \sqrt {c x^2}+\frac {2}{7} a b c x^6 \sqrt {c x^2}+\frac {1}{8} b^2 c x^7 \sqrt {c x^2} \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 37, normalized size of antiderivative = 0.62 \[ \int x^2 \left (c x^2\right )^{3/2} (a+b x)^2 \, dx=\frac {1}{168} \left (c x^2\right )^{3/2} \left (28 a^2 x^3+48 a b x^4+21 b^2 x^5\right ) \]
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Time = 0.12 (sec) , antiderivative size = 32, normalized size of antiderivative = 0.53
method | result | size |
gosper | \(\frac {x^{3} \left (21 b^{2} x^{2}+48 a b x +28 a^{2}\right ) \left (c \,x^{2}\right )^{\frac {3}{2}}}{168}\) | \(32\) |
default | \(\frac {x^{3} \left (21 b^{2} x^{2}+48 a b x +28 a^{2}\right ) \left (c \,x^{2}\right )^{\frac {3}{2}}}{168}\) | \(32\) |
risch | \(\frac {a^{2} c \,x^{5} \sqrt {c \,x^{2}}}{6}+\frac {2 a b c \,x^{6} \sqrt {c \,x^{2}}}{7}+\frac {b^{2} c \,x^{7} \sqrt {c \,x^{2}}}{8}\) | \(49\) |
trager | \(\frac {c \left (21 b^{2} x^{7}+48 a b \,x^{6}+21 b^{2} x^{6}+28 a^{2} x^{5}+48 a b \,x^{5}+21 b^{2} x^{5}+28 a^{2} x^{4}+48 a b \,x^{4}+21 b^{2} x^{4}+28 a^{2} x^{3}+48 a b \,x^{3}+21 b^{2} x^{3}+28 a^{2} x^{2}+48 a b \,x^{2}+21 b^{2} x^{2}+28 a^{2} x +48 a b x +21 b^{2} x +28 a^{2}+48 a b +21 b^{2}\right ) \left (-1+x \right ) \sqrt {c \,x^{2}}}{168 x}\) | \(164\) |
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Time = 0.22 (sec) , antiderivative size = 36, normalized size of antiderivative = 0.60 \[ \int x^2 \left (c x^2\right )^{3/2} (a+b x)^2 \, dx=\frac {1}{168} \, {\left (21 \, b^{2} c x^{7} + 48 \, a b c x^{6} + 28 \, a^{2} c x^{5}\right )} \sqrt {c x^{2}} \]
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Time = 0.27 (sec) , antiderivative size = 51, normalized size of antiderivative = 0.85 \[ \int x^2 \left (c x^2\right )^{3/2} (a+b x)^2 \, dx=\frac {a^{2} x^{3} \left (c x^{2}\right )^{\frac {3}{2}}}{6} + \frac {2 a b x^{4} \left (c x^{2}\right )^{\frac {3}{2}}}{7} + \frac {b^{2} x^{5} \left (c x^{2}\right )^{\frac {3}{2}}}{8} \]
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none
Time = 0.22 (sec) , antiderivative size = 52, normalized size of antiderivative = 0.87 \[ \int x^2 \left (c x^2\right )^{3/2} (a+b x)^2 \, dx=\frac {\left (c x^{2}\right )^{\frac {5}{2}} b^{2} x^{3}}{8 \, c} + \frac {2 \, \left (c x^{2}\right )^{\frac {5}{2}} a b x^{2}}{7 \, c} + \frac {\left (c x^{2}\right )^{\frac {5}{2}} a^{2} x}{6 \, c} \]
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Time = 0.30 (sec) , antiderivative size = 35, normalized size of antiderivative = 0.58 \[ \int x^2 \left (c x^2\right )^{3/2} (a+b x)^2 \, dx=\frac {1}{168} \, {\left (21 \, b^{2} x^{8} \mathrm {sgn}\left (x\right ) + 48 \, a b x^{7} \mathrm {sgn}\left (x\right ) + 28 \, a^{2} x^{6} \mathrm {sgn}\left (x\right )\right )} c^{\frac {3}{2}} \]
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Timed out. \[ \int x^2 \left (c x^2\right )^{3/2} (a+b x)^2 \, dx=\int x^2\,{\left (c\,x^2\right )}^{3/2}\,{\left (a+b\,x\right )}^2 \,d x \]
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