[(x^(2))/(r^(2)-r-6)+(y^(2))/(r^(2)-6r+5)=1],[" represent the ellipse if 'r' lies "],[" in the interval "]

(x^(2))/(r^(2)-r-6) +(y^(2))/(r^(2) - 6r + 5) = 1 will represents an ellipse if r lies in the interval _

(x^(2))/(r^(2)+r-6)+(y^(2))/(r^(2)-6r+5)=1 will represent the ellipse if r lies in the interval

(x^(2))/(r^(2)-r-6)+(y^(2))/(r^(2)-6r+5)=1 will represent ellipse if r lies in the interval

x^2/(r^2-r-6)+y^2/(r^2-6r+5)=1 will represent the ellipse if r lies in the interval

x^2/(r^2+r-6)+y^2/(r^2-6r+5)=1 will represent the ellipse if r lies in the interval

x^2/(r^2-r-6)+y^2/(r^2-6r+5)=1 will represent ellipse if r lies in the interval

x^2/(r^2-r-6)+y^2/(r^2-6r+5)=1 will represent ellipse if r lies in the interval (a).(- oo ,2) (b). (3, oo ) (c). (5, oo ) (d).(1, oo )

x^2/(r^2-r-6)+y^2/(r^2-6r+5)=1 will represent ellipse if r lies in the interval (a).(- oo ,2) (b). (3, oo ) (c). (5, oo ) (d).(1, oo )

Equation (x^(2))/(r-2) + (y^(2))/(5-r) = 1 represents an ellipse if

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