JEE Main 2017 Mathematics question

Mathematics Circle JEE Main 2017

The radius of a circle, having minimum area, which touches the curve and the lines, y = |x| is :

(A)
(B)Correct
(C)
(D)

Answer: (B)

Solution

Centre (0, k): touching y = |x| gives , and touching the parabola at its vertex

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Question ID VK-009016