Integrand size = 27, antiderivative size = 75 \[ \int \frac {e^{2 \coth ^{-1}(a x)} \sqrt {c-a^2 c x^2}}{x} \, dx=\sqrt {c-a^2 c x^2}-2 \sqrt {c} \arctan \left (\frac {a \sqrt {c} x}{\sqrt {c-a^2 c x^2}}\right )+\sqrt {c} \text {arctanh}\left (\frac {\sqrt {c-a^2 c x^2}}{\sqrt {c}}\right ) \]
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Time = 0.24 (sec) , antiderivative size = 75, normalized size of antiderivative = 1.00, number of steps used = 9, number of rules used = 9, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.333, Rules used = {6302, 6286, 1823, 858, 223, 209, 272, 65, 214} \[ \int \frac {e^{2 \coth ^{-1}(a x)} \sqrt {c-a^2 c x^2}}{x} \, dx=-2 \sqrt {c} \arctan \left (\frac {a \sqrt {c} x}{\sqrt {c-a^2 c x^2}}\right )+\sqrt {c} \text {arctanh}\left (\frac {\sqrt {c-a^2 c x^2}}{\sqrt {c}}\right )+\sqrt {c-a^2 c x^2} \]
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Rule 65
Rule 209
Rule 214
Rule 223
Rule 272
Rule 858
Rule 1823
Rule 6286
Rule 6302
Rubi steps \begin{align*} \text {integral}& = -\int \frac {e^{2 \text {arctanh}(a x)} \sqrt {c-a^2 c x^2}}{x} \, dx \\ & = -\left (c \int \frac {(1+a x)^2}{x \sqrt {c-a^2 c x^2}} \, dx\right ) \\ & = \sqrt {c-a^2 c x^2}+\frac {\int \frac {-a^2 c-2 a^3 c x}{x \sqrt {c-a^2 c x^2}} \, dx}{a^2} \\ & = \sqrt {c-a^2 c x^2}-c \int \frac {1}{x \sqrt {c-a^2 c x^2}} \, dx-(2 a c) \int \frac {1}{\sqrt {c-a^2 c x^2}} \, dx \\ & = \sqrt {c-a^2 c x^2}-\frac {1}{2} c \text {Subst}\left (\int \frac {1}{x \sqrt {c-a^2 c x}} \, dx,x,x^2\right )-(2 a c) \text {Subst}\left (\int \frac {1}{1+a^2 c x^2} \, dx,x,\frac {x}{\sqrt {c-a^2 c x^2}}\right ) \\ & = \sqrt {c-a^2 c x^2}-2 \sqrt {c} \arctan \left (\frac {a \sqrt {c} x}{\sqrt {c-a^2 c x^2}}\right )+\frac {\text {Subst}\left (\int \frac {1}{\frac {1}{a^2}-\frac {x^2}{a^2 c}} \, dx,x,\sqrt {c-a^2 c x^2}\right )}{a^2} \\ & = \sqrt {c-a^2 c x^2}-2 \sqrt {c} \arctan \left (\frac {a \sqrt {c} x}{\sqrt {c-a^2 c x^2}}\right )+\sqrt {c} \text {arctanh}\left (\frac {\sqrt {c-a^2 c x^2}}{\sqrt {c}}\right ) \\ \end{align*}
Time = 0.13 (sec) , antiderivative size = 97, normalized size of antiderivative = 1.29 \[ \int \frac {e^{2 \coth ^{-1}(a x)} \sqrt {c-a^2 c x^2}}{x} \, dx=\sqrt {c-a^2 c x^2}+2 \sqrt {c} \arctan \left (\frac {a x \sqrt {c-a^2 c x^2}}{\sqrt {c} \left (-1+a^2 x^2\right )}\right )-\sqrt {c} \log (x)+\sqrt {c} \log \left (c+\sqrt {c} \sqrt {c-a^2 c x^2}\right ) \]
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Leaf count of result is larger than twice the leaf count of optimal. \(128\) vs. \(2(61)=122\).
Time = 0.63 (sec) , antiderivative size = 129, normalized size of antiderivative = 1.72
method | result | size |
default | \(-\sqrt {-a^{2} c \,x^{2}+c}+\sqrt {c}\, \ln \left (\frac {2 c +2 \sqrt {c}\, \sqrt {-a^{2} c \,x^{2}+c}}{x}\right )+2 \sqrt {-a^{2} c \left (x -\frac {1}{a}\right )^{2}-2 \left (x -\frac {1}{a}\right ) a c}-\frac {2 a c \arctan \left (\frac {\sqrt {a^{2} c}\, x}{\sqrt {-a^{2} c \left (x -\frac {1}{a}\right )^{2}-2 \left (x -\frac {1}{a}\right ) a c}}\right )}{\sqrt {a^{2} c}}\) | \(129\) |
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Time = 0.27 (sec) , antiderivative size = 191, normalized size of antiderivative = 2.55 \[ \int \frac {e^{2 \coth ^{-1}(a x)} \sqrt {c-a^2 c x^2}}{x} \, dx=\left [2 \, \sqrt {c} \arctan \left (\frac {\sqrt {-a^{2} c x^{2} + c} a \sqrt {c} x}{a^{2} c x^{2} - c}\right ) + \frac {1}{2} \, \sqrt {c} \log \left (-\frac {a^{2} c x^{2} - 2 \, \sqrt {-a^{2} c x^{2} + c} \sqrt {c} - 2 \, c}{x^{2}}\right ) + \sqrt {-a^{2} c x^{2} + c}, \sqrt {-c} \arctan \left (\frac {\sqrt {-a^{2} c x^{2} + c} \sqrt {-c}}{a^{2} c x^{2} - c}\right ) + \sqrt {-c} \log \left (2 \, a^{2} c x^{2} - 2 \, \sqrt {-a^{2} c x^{2} + c} a \sqrt {-c} x - c\right ) + \sqrt {-a^{2} c x^{2} + c}\right ] \]
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\[ \int \frac {e^{2 \coth ^{-1}(a x)} \sqrt {c-a^2 c x^2}}{x} \, dx=\int \frac {\sqrt {- c \left (a x - 1\right ) \left (a x + 1\right )} \left (a x + 1\right )}{x \left (a x - 1\right )}\, dx \]
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Time = 0.29 (sec) , antiderivative size = 90, normalized size of antiderivative = 1.20 \[ \int \frac {e^{2 \coth ^{-1}(a x)} \sqrt {c-a^2 c x^2}}{x} \, dx=-a^{2} {\left (\frac {\sqrt {c} \arcsin \left (a x\right )}{a^{2}} - \frac {\sqrt {-a^{2} c x^{2} + c}}{a^{2}}\right )} - a {\left (\frac {\sqrt {c} \arcsin \left (a x\right )}{a} - \frac {\sqrt {c} \log \left (\frac {2 \, \sqrt {-a^{2} c x^{2} + c} \sqrt {c}}{{\left | x \right |}} + \frac {2 \, c}{{\left | x \right |}}\right )}{a}\right )} \]
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Time = 0.29 (sec) , antiderivative size = 95, normalized size of antiderivative = 1.27 \[ \int \frac {e^{2 \coth ^{-1}(a x)} \sqrt {c-a^2 c x^2}}{x} \, dx=-\frac {2 \, c \arctan \left (-\frac {\sqrt {-a^{2} c} x - \sqrt {-a^{2} c x^{2} + c}}{\sqrt {-c}}\right )}{\sqrt {-c}} - \frac {2 \, a \sqrt {-c} \log \left ({\left | -\sqrt {-a^{2} c} x + \sqrt {-a^{2} c x^{2} + c} \right |}\right )}{{\left | a \right |}} + \sqrt {-a^{2} c x^{2} + c} \]
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Timed out. \[ \int \frac {e^{2 \coth ^{-1}(a x)} \sqrt {c-a^2 c x^2}}{x} \, dx=\int \frac {\sqrt {c-a^2\,c\,x^2}\,\left (a\,x+1\right )}{x\,\left (a\,x-1\right )} \,d x \]
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