Mathematics · 2019
JEE Main · 10 April 2019, Shift 2 · Q79
The locus of the centres of the circles, which touch the circle, x^2+y^2=1 externally, also touch the y -axis and lie in the first quadrant, is:
The locus of the centres of the circles, which touch the circle, $\displaystyle x^2+y^2=1$ externally, also touch the $\displaystyle y$-axis and lie in the first quadrant, is :
Official answer
(1)
$\displaystyle y=\sqrt{1+2 x}, x \geqslant 0$
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JEE Main 2019 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.