Question:
Consider a family of circles which are passing through the point (-1, 1) and are tangent to xaxis. If (h, k) are the co-ordinates of the centre of the circles, then the set of values of k is given by the interval
Consider a family of circles which are passing through the point (-1, 1) and are tangent to xaxis. If (h, k) are the co-ordinates of the centre of the circles, then the set of values of k is given by the interval
Updated On: Jul 5, 2022
- $0\le k\le\frac{1}{2}$
- $k \ge ?$
- $- ? \le k \le ?$
- $k \le ?$
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The Correct Option is B
Solution and Explanation
$D \ge 0$
$2k-1 \ge 0 \Rightarrow k \ge 1/2.$
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