Let S = \{ (x,y) ∊R^2 : y^2/{1+r}-x^2/{1-r} = 1\} , where r ≠ ± 1. Then S represents : [10 Jan 2019 Shift 2]

Correct Answer is : An ellipse whose eccentricity is 2√r+1 , when r > 1

A hyperbola whose eccentricity is 2/\sqrt{r+1} , where 0 < r < 1.

An ellipse whose eccentricity is 1/\sqrt{r+1} , where r > 1

A hyperbola whose eccentricity is 2/\sqrt{r-1} , when 0 < r < 1.

An ellipse whose eccentricity is 2/\sqrt{r+1} , when r > 1

JEE Main 10 Jan 2019 Shift 2 Solved Paper

Section: Mathematics

Question : 44 of 90

Marks: +1, -0

Let S = { (x,y)∊R2:

1+r

−

1−r

=1} , where r ≠ ± 1. Then S represents :

[10 Jan 2019 Shift 2]

Go to Question:

Prev Question

Next Question