Integrand size = 20, antiderivative size = 57 \[ \int x^3 \sqrt {c x^2} (a+b x)^2 \, dx=\frac {1}{5} a^2 x^4 \sqrt {c x^2}+\frac {1}{3} a b x^5 \sqrt {c x^2}+\frac {1}{7} b^2 x^6 \sqrt {c x^2} \]
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Time = 0.01 (sec) , antiderivative size = 57, 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} \[ \int x^3 \sqrt {c x^2} (a+b x)^2 \, dx=\frac {1}{5} a^2 x^4 \sqrt {c x^2}+\frac {1}{3} a b x^5 \sqrt {c x^2}+\frac {1}{7} b^2 x^6 \sqrt {c x^2} \]
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Rule 15
Rule 45
Rubi steps \begin{align*} \text {integral}& = \frac {\sqrt {c x^2} \int x^4 (a+b x)^2 \, dx}{x} \\ & = \frac {\sqrt {c x^2} \int \left (a^2 x^4+2 a b x^5+b^2 x^6\right ) \, dx}{x} \\ & = \frac {1}{5} a^2 x^4 \sqrt {c x^2}+\frac {1}{3} a b x^5 \sqrt {c x^2}+\frac {1}{7} b^2 x^6 \sqrt {c x^2} \\ \end{align*}
Time = 0.03 (sec) , antiderivative size = 37, normalized size of antiderivative = 0.65 \[ \int x^3 \sqrt {c x^2} (a+b x)^2 \, dx=\frac {1}{105} \sqrt {c x^2} \left (21 a^2 x^4+35 a b x^5+15 b^2 x^6\right ) \]
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Time = 0.20 (sec) , antiderivative size = 32, normalized size of antiderivative = 0.56
method | result | size |
gosper | \(\frac {x^{4} \left (15 b^{2} x^{2}+35 a b x +21 a^{2}\right ) \sqrt {c \,x^{2}}}{105}\) | \(32\) |
default | \(\frac {x^{4} \left (15 b^{2} x^{2}+35 a b x +21 a^{2}\right ) \sqrt {c \,x^{2}}}{105}\) | \(32\) |
risch | \(\frac {a^{2} x^{4} \sqrt {c \,x^{2}}}{5}+\frac {a b \,x^{5} \sqrt {c \,x^{2}}}{3}+\frac {b^{2} x^{6} \sqrt {c \,x^{2}}}{7}\) | \(46\) |
trager | \(\frac {\left (15 b^{2} x^{6}+35 a b \,x^{5}+15 b^{2} x^{5}+21 a^{2} x^{4}+35 a b \,x^{4}+15 b^{2} x^{4}+21 a^{2} x^{3}+35 a b \,x^{3}+15 b^{2} x^{3}+21 a^{2} x^{2}+35 a b \,x^{2}+15 b^{2} x^{2}+21 a^{2} x +35 a b x +15 b^{2} x +21 a^{2}+35 a b +15 b^{2}\right ) \left (-1+x \right ) \sqrt {c \,x^{2}}}{105 x}\) | \(140\) |
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none
Time = 0.22 (sec) , antiderivative size = 33, normalized size of antiderivative = 0.58 \[ \int x^3 \sqrt {c x^2} (a+b x)^2 \, dx=\frac {1}{105} \, {\left (15 \, b^{2} x^{6} + 35 \, a b x^{5} + 21 \, a^{2} x^{4}\right )} \sqrt {c x^{2}} \]
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Time = 0.49 (sec) , antiderivative size = 49, normalized size of antiderivative = 0.86 \[ \int x^3 \sqrt {c x^2} (a+b x)^2 \, dx=\frac {a^{2} x^{4} \sqrt {c x^{2}}}{5} + \frac {a b x^{5} \sqrt {c x^{2}}}{3} + \frac {b^{2} x^{6} \sqrt {c x^{2}}}{7} \]
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none
Time = 0.22 (sec) , antiderivative size = 54, normalized size of antiderivative = 0.95 \[ \int x^3 \sqrt {c x^2} (a+b x)^2 \, dx=\frac {\left (c x^{2}\right )^{\frac {3}{2}} b^{2} x^{4}}{7 \, c} + \frac {\left (c x^{2}\right )^{\frac {3}{2}} a b x^{3}}{3 \, c} + \frac {\left (c x^{2}\right )^{\frac {3}{2}} a^{2} x^{2}}{5 \, c} \]
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none
Time = 0.28 (sec) , antiderivative size = 35, normalized size of antiderivative = 0.61 \[ \int x^3 \sqrt {c x^2} (a+b x)^2 \, dx=\frac {1}{105} \, {\left (15 \, b^{2} x^{7} \mathrm {sgn}\left (x\right ) + 35 \, a b x^{6} \mathrm {sgn}\left (x\right ) + 21 \, a^{2} x^{5} \mathrm {sgn}\left (x\right )\right )} \sqrt {c} \]
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Timed out. \[ \int x^3 \sqrt {c x^2} (a+b x)^2 \, dx=\int x^3\,\sqrt {c\,x^2}\,{\left (a+b\,x\right )}^2 \,d x \]
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