InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Which one of the following points lies outside the ellipse `(x^(2)//a^(2))+(y^(2)//b^(2))`?A. (a, 0)B. (0, b)C. (-a, 0)D. (a, 0) |
|
Answer» Correct Answer - D `"The equation of ellipse is "x^(2)/a^(2)+y^(2)/b^(2)-1=0` The point for which `x^(2)/a^(2)+y^(2)/b^(2)-1=0gt0` is outside ellipse. Since, at (a, 0)1 + 0 - 1 = 0 It lies on the ellipse. At (0, b), 0 + 1 - 1 = 0 It lies on the ellipse. At (-a, 0), 1 + 0 - 1 = 0 It lien on the ellipse. At (a, 0), `1 + 1 - 1 gt 0` So, the point (a, b) lies outside the ellipse. |
|