defence exam SSB Head Constable (Communication) 2023 Mock Test Mathematics Parabola, Ellipse and Hyperbola Ellipse
The equation \(\frac{{{x^2}}}{{1 - r}} - \frac{{{y^2}}}{{1 + r}} = 1,r > 1\) represents
1
An ellipse
2
A hyperbola
3
A circle
4
None of these