If a variable line has its intercepts on the coordinate axes \( e \...

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If a variable line has its intercepts on the coordinate axes \( e \) and \( e^{\prime} \), where \( e / 2 \) and \( e^{\prime} / 2 \) are the eccentricities of a
P hyperbola and its conjugate hyperbola, then the line always

W touches the circle \( x^{2}+y^{2}=r^{2} \), where \( r= \)
(1) 1
(2) 2
(3) 3
(4) cannot be decided
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