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Grade: 11 
        
Let x & y be the real numbers satisfying the equation x2- 4x + y2 + 3 = 0. If the maximum and minimum values of x2+ y2 are M & m respectively, then the numerical value of M - m is:
(A) 2   (B) 8   (C) 15   (D) none of these
EXPLAIN
 
5 years ago

Answers : (1)

View Solution
Arun Kumar
IIT Delhi
askIITians Faculty
256 Points 
							Hi
If you see first is equation of a circle and second is square of distance of points from the (0,0).
So


Thanks & Regards, Arun Kumar, Btech,IIT Delhi, Askiitians Faculty
5 years ago
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