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16. The equation {x²/(1-r)}-{y²/(1+r)}=1,r>1 represents 1. Ellipse 2. Hyperbola 3. Circle 4. None

Answer» 16. The equation {x²/(1-r)}-{y²/(1+r)}=1,r>1 represents 1. Ellipse 2. Hyperbola 3. Circle 4. None


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