Question
Question: The range of values of l for which the point (l, – 1) is exterior to both the parabola y<sup>2</sup>...
The range of values of l for which the point (l, – 1) is exterior to both the parabola y2 = |x| is –
A
(0, 1)
B
(– 1, 1)
C
(– 1, 0)
D
None of these
Answer
(– 1, 1)
Explanation
Solution
The parabolas are y2 – x = 0 if x ³ 0 and y2+x = 0
if x < 0, The point (l, – 1) is an exterior point if
1–l>0 and 1+l>0 ̃ l<1 and l>–1 ̃ –1<l<1