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x^2/(r^2-r-6)+y^2/(r^2-6r+5)=1 will repr...

`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`)

A

`(-infty,-2)`

B

`(1,infty)`

C

`(3,infty)`

D

`(5,infty)`

Text Solution

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The correct Answer is:
A, D
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