Integrand size = 17, antiderivative size = 48 \[ \int \frac {x^2}{\left (b x+c x^2\right )^{3/2}} \, dx=-\frac {2 x}{c \sqrt {b x+c x^2}}+\frac {2 \text {arctanh}\left (\frac {\sqrt {c} x}{\sqrt {b x+c x^2}}\right )}{c^{3/2}} \]
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Time = 0.01 (sec) , antiderivative size = 48, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.176, Rules used = {666, 634, 212} \[ \int \frac {x^2}{\left (b x+c x^2\right )^{3/2}} \, dx=\frac {2 \text {arctanh}\left (\frac {\sqrt {c} x}{\sqrt {b x+c x^2}}\right )}{c^{3/2}}-\frac {2 x}{c \sqrt {b x+c x^2}} \]
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Rule 212
Rule 634
Rule 666
Rubi steps \begin{align*} \text {integral}& = -\frac {2 x}{c \sqrt {b x+c x^2}}+\frac {\int \frac {1}{\sqrt {b x+c x^2}} \, dx}{c} \\ & = -\frac {2 x}{c \sqrt {b x+c x^2}}+\frac {2 \text {Subst}\left (\int \frac {1}{1-c x^2} \, dx,x,\frac {x}{\sqrt {b x+c x^2}}\right )}{c} \\ & = -\frac {2 x}{c \sqrt {b x+c x^2}}+\frac {2 \tanh ^{-1}\left (\frac {\sqrt {c} x}{\sqrt {b x+c x^2}}\right )}{c^{3/2}} \\ \end{align*}
Time = 0.17 (sec) , antiderivative size = 73, normalized size of antiderivative = 1.52 \[ \int \frac {x^2}{\left (b x+c x^2\right )^{3/2}} \, dx=\frac {-2 \sqrt {c} x+4 \sqrt {x} \sqrt {b+c x} \text {arctanh}\left (\frac {\sqrt {c} \sqrt {x}}{-\sqrt {b}+\sqrt {b+c x}}\right )}{c^{3/2} \sqrt {x (b+c x)}} \]
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Time = 1.92 (sec) , antiderivative size = 39, normalized size of antiderivative = 0.81
method | result | size |
pseudoelliptic | \(-\frac {2 x}{c \sqrt {x \left (c x +b \right )}}+\frac {2 \,\operatorname {arctanh}\left (\frac {\sqrt {x \left (c x +b \right )}}{x \sqrt {c}}\right )}{c^{\frac {3}{2}}}\) | \(39\) |
default | \(-\frac {x}{c \sqrt {c \,x^{2}+b x}}-\frac {b \left (-\frac {1}{c \sqrt {c \,x^{2}+b x}}+\frac {2 c x +b}{b c \sqrt {c \,x^{2}+b x}}\right )}{2 c}+\frac {\ln \left (\frac {\frac {b}{2}+c x}{\sqrt {c}}+\sqrt {c \,x^{2}+b x}\right )}{c^{\frac {3}{2}}}\) | \(94\) |
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Time = 0.24 (sec) , antiderivative size = 126, normalized size of antiderivative = 2.62 \[ \int \frac {x^2}{\left (b x+c x^2\right )^{3/2}} \, dx=\left [\frac {{\left (c x + b\right )} \sqrt {c} \log \left (2 \, c x + b + 2 \, \sqrt {c x^{2} + b x} \sqrt {c}\right ) - 2 \, \sqrt {c x^{2} + b x} c}{c^{3} x + b c^{2}}, -\frac {2 \, {\left ({\left (c x + b\right )} \sqrt {-c} \arctan \left (\frac {\sqrt {c x^{2} + b x} \sqrt {-c}}{c x}\right ) + \sqrt {c x^{2} + b x} c\right )}}{c^{3} x + b c^{2}}\right ] \]
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\[ \int \frac {x^2}{\left (b x+c x^2\right )^{3/2}} \, dx=\int \frac {x^{2}}{\left (x \left (b + c x\right )\right )^{\frac {3}{2}}}\, dx \]
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Time = 0.19 (sec) , antiderivative size = 45, normalized size of antiderivative = 0.94 \[ \int \frac {x^2}{\left (b x+c x^2\right )^{3/2}} \, dx=-\frac {2 \, x}{\sqrt {c x^{2} + b x} c} + \frac {\log \left (2 \, c x + b + 2 \, \sqrt {c x^{2} + b x} \sqrt {c}\right )}{c^{\frac {3}{2}}} \]
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Time = 0.30 (sec) , antiderivative size = 67, normalized size of antiderivative = 1.40 \[ \int \frac {x^2}{\left (b x+c x^2\right )^{3/2}} \, dx=-\frac {\log \left ({\left | 2 \, {\left (\sqrt {c} x - \sqrt {c x^{2} + b x}\right )} \sqrt {c} + b \right |}\right )}{c^{\frac {3}{2}}} - \frac {2 \, b}{{\left ({\left (\sqrt {c} x - \sqrt {c x^{2} + b x}\right )} \sqrt {c} + b\right )} c^{\frac {3}{2}}} \]
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Time = 8.99 (sec) , antiderivative size = 46, normalized size of antiderivative = 0.96 \[ \int \frac {x^2}{\left (b x+c x^2\right )^{3/2}} \, dx=\frac {\ln \left (\frac {\frac {b}{2}+c\,x}{\sqrt {c}}+\sqrt {c\,x^2+b\,x}\right )}{c^{3/2}}-\frac {2\,x}{c\,\sqrt {c\,x^2+b\,x}} \]
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