Integrand size = 26, antiderivative size = 41 \[ \int \frac {1}{x (1-a x) \sqrt {1-a^2 x^2}} \, dx=\frac {\sqrt {1-a^2 x^2}}{1-a x}-\text {arctanh}\left (\sqrt {1-a^2 x^2}\right ) \]
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Time = 0.03 (sec) , antiderivative size = 41, normalized size of antiderivative = 1.00, number of steps used = 5, number of rules used = 5, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.192, Rules used = {871, 12, 272, 65, 214} \[ \int \frac {1}{x (1-a x) \sqrt {1-a^2 x^2}} \, dx=\frac {\sqrt {1-a^2 x^2}}{1-a x}-\text {arctanh}\left (\sqrt {1-a^2 x^2}\right ) \]
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Rule 12
Rule 65
Rule 214
Rule 272
Rule 871
Rubi steps \begin{align*} \text {integral}& = \frac {\sqrt {1-a^2 x^2}}{1-a x}+\frac {\int \frac {a^2}{x \sqrt {1-a^2 x^2}} \, dx}{a^2} \\ & = \frac {\sqrt {1-a^2 x^2}}{1-a x}+\int \frac {1}{x \sqrt {1-a^2 x^2}} \, dx \\ & = \frac {\sqrt {1-a^2 x^2}}{1-a x}+\frac {1}{2} \text {Subst}\left (\int \frac {1}{x \sqrt {1-a^2 x}} \, dx,x,x^2\right ) \\ & = \frac {\sqrt {1-a^2 x^2}}{1-a x}-\frac {\text {Subst}\left (\int \frac {1}{\frac {1}{a^2}-\frac {x^2}{a^2}} \, dx,x,\sqrt {1-a^2 x^2}\right )}{a^2} \\ & = \frac {\sqrt {1-a^2 x^2}}{1-a x}-\tanh ^{-1}\left (\sqrt {1-a^2 x^2}\right ) \\ \end{align*}
Time = 0.12 (sec) , antiderivative size = 45, normalized size of antiderivative = 1.10 \[ \int \frac {1}{x (1-a x) \sqrt {1-a^2 x^2}} \, dx=-\frac {\sqrt {1-a^2 x^2}}{-1+a x}-\log (x)+\log \left (-1+\sqrt {1-a^2 x^2}\right ) \]
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Time = 0.36 (sec) , antiderivative size = 58, normalized size of antiderivative = 1.41
method | result | size |
default | \(-\operatorname {arctanh}\left (\frac {1}{\sqrt {-a^{2} x^{2}+1}}\right )-\frac {\sqrt {-a^{2} \left (x -\frac {1}{a}\right )^{2}-2 a \left (x -\frac {1}{a}\right )}}{a \left (x -\frac {1}{a}\right )}\) | \(58\) |
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Time = 0.25 (sec) , antiderivative size = 52, normalized size of antiderivative = 1.27 \[ \int \frac {1}{x (1-a x) \sqrt {1-a^2 x^2}} \, dx=\frac {a x + {\left (a x - 1\right )} \log \left (\frac {\sqrt {-a^{2} x^{2} + 1} - 1}{x}\right ) - \sqrt {-a^{2} x^{2} + 1} - 1}{a x - 1} \]
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\[ \int \frac {1}{x (1-a x) \sqrt {1-a^2 x^2}} \, dx=- \int \frac {1}{a x^{2} \sqrt {- a^{2} x^{2} + 1} - x \sqrt {- a^{2} x^{2} + 1}}\, dx \]
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\[ \int \frac {1}{x (1-a x) \sqrt {1-a^2 x^2}} \, dx=\int { -\frac {1}{\sqrt {-a^{2} x^{2} + 1} {\left (a x - 1\right )} x} \,d x } \]
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Time = 0.30 (sec) , antiderivative size = 74, normalized size of antiderivative = 1.80 \[ \int \frac {1}{x (1-a x) \sqrt {1-a^2 x^2}} \, dx=-\frac {a \log \left (\frac {{\left | -2 \, \sqrt {-a^{2} x^{2} + 1} {\left | a \right |} - 2 \, a \right |}}{2 \, a^{2} {\left | x \right |}}\right )}{{\left | a \right |}} + \frac {2 \, a}{{\left (\frac {\sqrt {-a^{2} x^{2} + 1} {\left | a \right |} + a}{a^{2} x} - 1\right )} {\left | a \right |}} \]
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Time = 11.47 (sec) , antiderivative size = 58, normalized size of antiderivative = 1.41 \[ \int \frac {1}{x (1-a x) \sqrt {1-a^2 x^2}} \, dx=\frac {a\,\sqrt {1-a^2\,x^2}}{\sqrt {-a^2}\,\left (\frac {a}{\sqrt {-a^2}}+x\,\sqrt {-a^2}\right )}-\mathrm {atanh}\left (\sqrt {1-a^2\,x^2}\right ) \]
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