find the condition for the curves x^2/A^2-y^2/a^2
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the above equation is a hyperbola ,
in hyperbola eccentricity always greater then 1
now,
e(eccentricity)=√(1+a^2/A^2) >1
hence,
√(1+a^2/A^2) >1 is condition of this curve be a hyperbola
in hyperbola eccentricity always greater then 1
now,
e(eccentricity)=√(1+a^2/A^2) >1
hence,
√(1+a^2/A^2) >1 is condition of this curve be a hyperbola
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