Integrand size = 16, antiderivative size = 35 \[ \int x \sqrt {c x^2} (a+b x) \, dx=\frac {1}{3} a x^2 \sqrt {c x^2}+\frac {1}{4} b x^3 \sqrt {c x^2} \]
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Time = 0.01 (sec) , antiderivative size = 35, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.125, Rules used = {15, 45} \[ \int x \sqrt {c x^2} (a+b x) \, dx=\frac {1}{3} a x^2 \sqrt {c x^2}+\frac {1}{4} b x^3 \sqrt {c x^2} \]
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Rule 15
Rule 45
Rubi steps \begin{align*} \text {integral}& = \frac {\sqrt {c x^2} \int x^2 (a+b x) \, dx}{x} \\ & = \frac {\sqrt {c x^2} \int \left (a x^2+b x^3\right ) \, dx}{x} \\ & = \frac {1}{3} a x^2 \sqrt {c x^2}+\frac {1}{4} b x^3 \sqrt {c x^2} \\ \end{align*}
Time = 0.02 (sec) , antiderivative size = 24, normalized size of antiderivative = 0.69 \[ \int x \sqrt {c x^2} (a+b x) \, dx=\frac {1}{12} x^2 \sqrt {c x^2} (4 a+3 b x) \]
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Time = 0.03 (sec) , antiderivative size = 21, normalized size of antiderivative = 0.60
method | result | size |
gosper | \(\frac {x^{2} \left (3 b x +4 a \right ) \sqrt {c \,x^{2}}}{12}\) | \(21\) |
default | \(\frac {x^{2} \left (3 b x +4 a \right ) \sqrt {c \,x^{2}}}{12}\) | \(21\) |
risch | \(\frac {a \,x^{2} \sqrt {c \,x^{2}}}{3}+\frac {b \,x^{3} \sqrt {c \,x^{2}}}{4}\) | \(28\) |
trager | \(\frac {\left (3 b \,x^{3}+4 a \,x^{2}+3 b \,x^{2}+4 a x +3 b x +4 a +3 b \right ) \left (-1+x \right ) \sqrt {c \,x^{2}}}{12 x}\) | \(49\) |
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Time = 0.21 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.63 \[ \int x \sqrt {c x^2} (a+b x) \, dx=\frac {1}{12} \, {\left (3 \, b x^{3} + 4 \, a x^{2}\right )} \sqrt {c x^{2}} \]
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Time = 0.11 (sec) , antiderivative size = 29, normalized size of antiderivative = 0.83 \[ \int x \sqrt {c x^2} (a+b x) \, dx=\frac {a x^{2} \sqrt {c x^{2}}}{3} + \frac {b x^{3} \sqrt {c x^{2}}}{4} \]
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Time = 0.20 (sec) , antiderivative size = 28, normalized size of antiderivative = 0.80 \[ \int x \sqrt {c x^2} (a+b x) \, dx=\frac {\left (c x^{2}\right )^{\frac {3}{2}} b x}{4 \, c} + \frac {\left (c x^{2}\right )^{\frac {3}{2}} a}{3 \, c} \]
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Time = 0.30 (sec) , antiderivative size = 22, normalized size of antiderivative = 0.63 \[ \int x \sqrt {c x^2} (a+b x) \, dx=\frac {1}{12} \, {\left (3 \, b x^{4} \mathrm {sgn}\left (x\right ) + 4 \, a x^{3} \mathrm {sgn}\left (x\right )\right )} \sqrt {c} \]
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Timed out. \[ \int x \sqrt {c x^2} (a+b x) \, dx=\int x\,\sqrt {c\,x^2}\,\left (a+b\,x\right ) \,d x \]
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