InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
if lines represented by equation `px^(2)-qy^(2)=0` are distinct, thenA. `pq gt 0`B. ` pq lt 0`C. `pq = 0`D. ` p +q = 0` |
|
Answer» Correct Answer - A Given pair of line is `px^(2) - qy^(2) = 0 "…"(i)` On comparing Eq. (i) with `ax^(2) + 2hxy +by^(2) = 0`, we get `a = p, b = - q, h = 0` We know that, slopes of `ax^(2) +2hxy + by^(2) = 0` are real and distinct if and only if `h^(2) - ab gt 0` `rArr 0 + pq gt0` `rArr pq gt 0` |
|