Pair Of Straight Lines Question 20
Question: The equation $ y^{2}-x^{2}+2x-1=0 $ represents
[MNR 1991]
Options:
A) A pair of straight lines
B) A circle
C) A parabola is a U-shaped curve where any point is at an equal distance from the focus and directrix.
D) An ellipse is a closed curve traced by a point moving in a plane such that the sum of the distances from two fixed points (foci) is constant.
Show Answer
Answer:
Correct Answer: A
Solution:
Using condition $ \Delta =0 $ .
BETA
