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If e and e' are the eccentricities of th...

If `e and e'` are the eccentricities of the hyperbola `x^2/a^2-y^2/b^2=1 and y^2/b^2-x^2/a^2=1,` then the point `(1/e,1/(e'))` lies on the circle (A) `x^2+y^2=1` (B) `x^2+y^2=2` (C) `x^2+y^2=3` (D) `x^2+y^2=4`

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