Integrand size = 17, antiderivative size = 89 \[ \int \frac {\left (c x^2\right )^{3/2}}{(a+b x)^2} \, dx=-\frac {2 a c \sqrt {c x^2}}{b^3}+\frac {c x \sqrt {c x^2}}{2 b^2}+\frac {a^3 c \sqrt {c x^2}}{b^4 x (a+b x)}+\frac {3 a^2 c \sqrt {c x^2} \log (a+b x)}{b^4 x} \]
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Time = 0.02 (sec) , antiderivative size = 89, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.118, Rules used = {15, 45} \[ \int \frac {\left (c x^2\right )^{3/2}}{(a+b x)^2} \, dx=\frac {a^3 c \sqrt {c x^2}}{b^4 x (a+b x)}+\frac {3 a^2 c \sqrt {c x^2} \log (a+b x)}{b^4 x}-\frac {2 a c \sqrt {c x^2}}{b^3}+\frac {c x \sqrt {c x^2}}{2 b^2} \]
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Rule 15
Rule 45
Rubi steps \begin{align*} \text {integral}& = \frac {\left (c \sqrt {c x^2}\right ) \int \frac {x^3}{(a+b x)^2} \, dx}{x} \\ & = \frac {\left (c \sqrt {c x^2}\right ) \int \left (-\frac {2 a}{b^3}+\frac {x}{b^2}-\frac {a^3}{b^3 (a+b x)^2}+\frac {3 a^2}{b^3 (a+b x)}\right ) \, dx}{x} \\ & = -\frac {2 a c \sqrt {c x^2}}{b^3}+\frac {c x \sqrt {c x^2}}{2 b^2}+\frac {a^3 c \sqrt {c x^2}}{b^4 x (a+b x)}+\frac {3 a^2 c \sqrt {c x^2} \log (a+b x)}{b^4 x} \\ \end{align*}
Time = 0.05 (sec) , antiderivative size = 71, normalized size of antiderivative = 0.80 \[ \int \frac {\left (c x^2\right )^{3/2}}{(a+b x)^2} \, dx=\frac {\left (c x^2\right )^{3/2} \left (2 a^3-4 a^2 b x-3 a b^2 x^2+b^3 x^3+6 a^2 (a+b x) \log (a+b x)\right )}{2 b^4 x^3 (a+b x)} \]
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Time = 0.24 (sec) , antiderivative size = 76, normalized size of antiderivative = 0.85
method | result | size |
default | \(\frac {\left (c \,x^{2}\right )^{\frac {3}{2}} \left (b^{3} x^{3}+6 \ln \left (b x +a \right ) a^{2} b x -3 a \,b^{2} x^{2}+6 a^{3} \ln \left (b x +a \right )-4 a^{2} b x +2 a^{3}\right )}{2 x^{3} b^{4} \left (b x +a \right )}\) | \(76\) |
risch | \(\frac {c \sqrt {c \,x^{2}}\, \left (\frac {1}{2} b \,x^{2}-2 a x \right )}{x \,b^{3}}+\frac {a^{3} c \sqrt {c \,x^{2}}}{b^{4} x \left (b x +a \right )}+\frac {3 a^{2} c \ln \left (b x +a \right ) \sqrt {c \,x^{2}}}{b^{4} x}\) | \(78\) |
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Time = 0.22 (sec) , antiderivative size = 79, normalized size of antiderivative = 0.89 \[ \int \frac {\left (c x^2\right )^{3/2}}{(a+b x)^2} \, dx=\frac {{\left (b^{3} c x^{3} - 3 \, a b^{2} c x^{2} - 4 \, a^{2} b c x + 2 \, a^{3} c + 6 \, {\left (a^{2} b c x + a^{3} c\right )} \log \left (b x + a\right )\right )} \sqrt {c x^{2}}}{2 \, {\left (b^{5} x^{2} + a b^{4} x\right )}} \]
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\[ \int \frac {\left (c x^2\right )^{3/2}}{(a+b x)^2} \, dx=\int \frac {\left (c x^{2}\right )^{\frac {3}{2}}}{\left (a + b x\right )^{2}}\, dx \]
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Time = 0.20 (sec) , antiderivative size = 115, normalized size of antiderivative = 1.29 \[ \int \frac {\left (c x^2\right )^{3/2}}{(a+b x)^2} \, dx=\frac {3 \, \left (-1\right )^{\frac {2 \, c x}{b}} a^{2} c^{\frac {3}{2}} \log \left (\frac {2 \, c x}{b}\right )}{b^{4}} + \frac {3 \, \left (-1\right )^{\frac {2 \, a c x}{b}} a^{2} c^{\frac {3}{2}} \log \left (-\frac {2 \, a c x}{b {\left | b x + a \right |}}\right )}{b^{4}} - \frac {\left (c x^{2}\right )^{\frac {3}{2}}}{b^{2} x + a b} + \frac {3 \, \sqrt {c x^{2}} c x}{2 \, b^{2}} - \frac {3 \, \sqrt {c x^{2}} a c}{b^{3}} \]
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Time = 0.29 (sec) , antiderivative size = 80, normalized size of antiderivative = 0.90 \[ \int \frac {\left (c x^2\right )^{3/2}}{(a+b x)^2} \, dx=\frac {1}{2} \, c^{\frac {3}{2}} {\left (\frac {6 \, a^{2} \log \left ({\left | b x + a \right |}\right ) \mathrm {sgn}\left (x\right )}{b^{4}} + \frac {2 \, a^{3} \mathrm {sgn}\left (x\right )}{{\left (b x + a\right )} b^{4}} - \frac {2 \, {\left (3 \, a^{2} \log \left ({\left | a \right |}\right ) + a^{2}\right )} \mathrm {sgn}\left (x\right )}{b^{4}} + \frac {b^{2} x^{2} \mathrm {sgn}\left (x\right ) - 4 \, a b x \mathrm {sgn}\left (x\right )}{b^{4}}\right )} \]
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Timed out. \[ \int \frac {\left (c x^2\right )^{3/2}}{(a+b x)^2} \, dx=\int \frac {{\left (c\,x^2\right )}^{3/2}}{{\left (a+b\,x\right )}^2} \,d x \]
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