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The equation (x^(2))/(1-r)+(y^(2))/(r-3)...

The equation `(x^(2))/(1-r)+(y^(2))/(r-3)+1=0` represents an ellipse if :

A

a hyperbola

B

an ellipse

C

a circle

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
D
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