Integrand size = 20, antiderivative size = 112 \[ \int \frac {\sqrt {c x^2}}{x^4 (a+b x)^2} \, dx=-\frac {\sqrt {c x^2}}{2 a^2 x^3}+\frac {2 b \sqrt {c x^2}}{a^3 x^2}+\frac {b^2 \sqrt {c x^2}}{a^3 x (a+b x)}+\frac {3 b^2 \sqrt {c x^2} \log (x)}{a^4 x}-\frac {3 b^2 \sqrt {c x^2} \log (a+b x)}{a^4 x} \]
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Time = 0.03 (sec) , antiderivative size = 112, 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, 46} \[ \int \frac {\sqrt {c x^2}}{x^4 (a+b x)^2} \, dx=\frac {3 b^2 \sqrt {c x^2} \log (x)}{a^4 x}-\frac {3 b^2 \sqrt {c x^2} \log (a+b x)}{a^4 x}+\frac {b^2 \sqrt {c x^2}}{a^3 x (a+b x)}+\frac {2 b \sqrt {c x^2}}{a^3 x^2}-\frac {\sqrt {c x^2}}{2 a^2 x^3} \]
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Rule 15
Rule 46
Rubi steps \begin{align*} \text {integral}& = \frac {\sqrt {c x^2} \int \frac {1}{x^3 (a+b x)^2} \, dx}{x} \\ & = \frac {\sqrt {c x^2} \int \left (\frac {1}{a^2 x^3}-\frac {2 b}{a^3 x^2}+\frac {3 b^2}{a^4 x}-\frac {b^3}{a^3 (a+b x)^2}-\frac {3 b^3}{a^4 (a+b x)}\right ) \, dx}{x} \\ & = -\frac {\sqrt {c x^2}}{2 a^2 x^3}+\frac {2 b \sqrt {c x^2}}{a^3 x^2}+\frac {b^2 \sqrt {c x^2}}{a^3 x (a+b x)}+\frac {3 b^2 \sqrt {c x^2} \log (x)}{a^4 x}-\frac {3 b^2 \sqrt {c x^2} \log (a+b x)}{a^4 x} \\ \end{align*}
Time = 0.07 (sec) , antiderivative size = 72, normalized size of antiderivative = 0.64 \[ \int \frac {\sqrt {c x^2}}{x^4 (a+b x)^2} \, dx=\frac {\sqrt {c x^2} \left (\frac {a \left (-a^2+3 a b x+6 b^2 x^2\right )}{a+b x}+6 b^2 x^2 \log (x)-6 b^2 x^2 \log (a+b x)\right )}{2 a^4 x^3} \]
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Time = 0.15 (sec) , antiderivative size = 90, normalized size of antiderivative = 0.80
method | result | size |
risch | \(\frac {\sqrt {c \,x^{2}}\, \left (\frac {3 b^{2} x^{2}}{a^{3}}+\frac {3 b x}{2 a^{2}}-\frac {1}{2 a}\right )}{x^{3} \left (b x +a \right )}+\frac {3 \sqrt {c \,x^{2}}\, b^{2} \ln \left (-x \right )}{x \,a^{4}}-\frac {3 b^{2} \ln \left (b x +a \right ) \sqrt {c \,x^{2}}}{a^{4} x}\) | \(90\) |
default | \(\frac {\sqrt {c \,x^{2}}\, \left (6 b^{3} \ln \left (x \right ) x^{3}-6 b^{3} \ln \left (b x +a \right ) x^{3}+6 a \,b^{2} \ln \left (x \right ) x^{2}-6 \ln \left (b x +a \right ) x^{2} a \,b^{2}+6 a \,b^{2} x^{2}+3 a^{2} b x -a^{3}\right )}{2 x^{3} a^{4} \left (b x +a \right )}\) | \(95\) |
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Time = 0.23 (sec) , antiderivative size = 77, normalized size of antiderivative = 0.69 \[ \int \frac {\sqrt {c x^2}}{x^4 (a+b x)^2} \, dx=\frac {{\left (6 \, a b^{2} x^{2} + 3 \, a^{2} b x - a^{3} + 6 \, {\left (b^{3} x^{3} + a b^{2} x^{2}\right )} \log \left (\frac {x}{b x + a}\right )\right )} \sqrt {c x^{2}}}{2 \, {\left (a^{4} b x^{4} + a^{5} x^{3}\right )}} \]
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\[ \int \frac {\sqrt {c x^2}}{x^4 (a+b x)^2} \, dx=\int \frac {\sqrt {c x^{2}}}{x^{4} \left (a + b x\right )^{2}}\, dx \]
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Time = 0.21 (sec) , antiderivative size = 79, normalized size of antiderivative = 0.71 \[ \int \frac {\sqrt {c x^2}}{x^4 (a+b x)^2} \, dx=\frac {6 \, b^{2} \sqrt {c} x^{2} + 3 \, a b \sqrt {c} x - a^{2} \sqrt {c}}{2 \, {\left (a^{3} b x^{3} + a^{4} x^{2}\right )}} - \frac {3 \, b^{2} \sqrt {c} \log \left (b x + a\right )}{a^{4}} + \frac {3 \, b^{2} \sqrt {c} \log \left (x\right )}{a^{4}} \]
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Exception generated. \[ \int \frac {\sqrt {c x^2}}{x^4 (a+b x)^2} \, dx=\text {Exception raised: TypeError} \]
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Timed out. \[ \int \frac {\sqrt {c x^2}}{x^4 (a+b x)^2} \, dx=\int \frac {\sqrt {c\,x^2}}{x^4\,{\left (a+b\,x\right )}^2} \,d x \]
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