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if line y + x =2 do not intersect any member of circles x^2 + y^2 - ax=0 at two distinct points where a is a parameter , then max. Value of |a+4| is ….......

if line y + x =2 do not intersect any member of circles x^2 + y^2 - ax=0 at two distinct points where a is a parameter , then max. Value of |a+4| is ….......

Grade:11

1 Answers

Vikas TU
14149 Points
7 years ago
put y = 2-x into the circle eqn.
The quadratic formed would must possess the D less than zero that is to say that their roots should be imaginary for not touching the circles either way.
thus U would get an inequality in a+4 less than something and that would be the answer.

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