Integrand size = 20, antiderivative size = 103 \[ \int \frac {1}{x^2 \sqrt {c x^2} (a+b x)^2} \, dx=\frac {2 b}{a^3 \sqrt {c x^2}}-\frac {1}{2 a^2 x \sqrt {c x^2}}+\frac {b^2 x}{a^3 \sqrt {c x^2} (a+b x)}+\frac {3 b^2 x \log (x)}{a^4 \sqrt {c x^2}}-\frac {3 b^2 x \log (a+b x)}{a^4 \sqrt {c x^2}} \]
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Time = 0.02 (sec) , antiderivative size = 103, 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} \[ \int \frac {1}{x^2 \sqrt {c x^2} (a+b x)^2} \, dx=\frac {3 b^2 x \log (x)}{a^4 \sqrt {c x^2}}-\frac {3 b^2 x \log (a+b x)}{a^4 \sqrt {c x^2}}+\frac {b^2 x}{a^3 \sqrt {c x^2} (a+b x)}+\frac {2 b}{a^3 \sqrt {c x^2}}-\frac {1}{2 a^2 x \sqrt {c x^2}} \]
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Rule 15
Rule 46
Rubi steps \begin{align*} \text {integral}& = \frac {x \int \frac {1}{x^3 (a+b x)^2} \, dx}{\sqrt {c x^2}} \\ & = \frac {x \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}{\sqrt {c x^2}} \\ & = \frac {2 b}{a^3 \sqrt {c x^2}}-\frac {1}{2 a^2 x \sqrt {c x^2}}+\frac {b^2 x}{a^3 \sqrt {c x^2} (a+b x)}+\frac {3 b^2 x \log (x)}{a^4 \sqrt {c x^2}}-\frac {3 b^2 x \log (a+b x)}{a^4 \sqrt {c x^2}} \\ \end{align*}
Time = 0.07 (sec) , antiderivative size = 71, normalized size of antiderivative = 0.69 \[ \int \frac {1}{x^2 \sqrt {c x^2} (a+b x)^2} \, dx=\frac {c x \left (\frac {a \left (-a^2+3 a b x+6 b^2 x^2\right )}{a+b x}+6 b^2 x^2 \log (x)-6 b^2 x^2 \log (a+b x)\right )}{2 a^4 \left (c x^2\right )^{3/2}} \]
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Time = 0.32 (sec) , antiderivative size = 86, normalized size of antiderivative = 0.83
method | result | size |
risch | \(\frac {\frac {3 b^{2} x^{2}}{a^{3}}+\frac {3 b x}{2 a^{2}}-\frac {1}{2 a}}{\sqrt {c \,x^{2}}\, x \left (b x +a \right )}+\frac {3 x \,b^{2} \ln \left (-x \right )}{\sqrt {c \,x^{2}}\, a^{4}}-\frac {3 b^{2} x \ln \left (b x +a \right )}{a^{4} \sqrt {c \,x^{2}}}\) | \(86\) |
default | \(\frac {6 b^{3} \ln \left (x \right ) x^{3}-6 b^{3} \ln \left (b x +a \right ) x^{3}+6 a \,b^{2} \ln \left (x \right ) x^{2}-6 \ln \left (b x +a \right ) x^{2} a \,b^{2}+6 a \,b^{2} x^{2}+3 a^{2} b x -a^{3}}{2 x \sqrt {c \,x^{2}}\, a^{4} \left (b x +a \right )}\) | \(95\) |
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Time = 0.23 (sec) , antiderivative size = 79, normalized size of antiderivative = 0.77 \[ \int \frac {1}{x^2 \sqrt {c x^2} (a+b x)^2} \, dx=\frac {{\left (6 \, a b^{2} x^{2} + 3 \, a^{2} b x - a^{3} + 6 \, {\left (b^{3} x^{3} + a b^{2} x^{2}\right )} \log \left (\frac {x}{b x + a}\right )\right )} \sqrt {c x^{2}}}{2 \, {\left (a^{4} b c x^{4} + a^{5} c x^{3}\right )}} \]
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\[ \int \frac {1}{x^2 \sqrt {c x^2} (a+b x)^2} \, dx=\int \frac {1}{x^{2} \sqrt {c x^{2}} \left (a + b x\right )^{2}}\, dx \]
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Time = 0.21 (sec) , antiderivative size = 76, normalized size of antiderivative = 0.74 \[ \int \frac {1}{x^2 \sqrt {c x^2} (a+b x)^2} \, dx=\frac {6 \, b^{2} x^{2} + 3 \, a b x - a^{2}}{2 \, {\left (a^{3} b \sqrt {c} x^{3} + a^{4} \sqrt {c} x^{2}\right )}} - \frac {3 \, b^{2} \log \left (b x + a\right )}{a^{4} \sqrt {c}} + \frac {3 \, b^{2} \log \left (x\right )}{a^{4} \sqrt {c}} \]
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Exception generated. \[ \int \frac {1}{x^2 \sqrt {c x^2} (a+b x)^2} \, dx=\text {Exception raised: TypeError} \]
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Timed out. \[ \int \frac {1}{x^2 \sqrt {c x^2} (a+b x)^2} \, dx=\int \frac {1}{x^2\,\sqrt {c\,x^2}\,{\left (a+b\,x\right )}^2} \,d x \]
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