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Grade: 12

                        

Find A and B if the following equation if of a circle : (Ax)^2 + (B+4)y^2 + (A-3)xy + 5x + 7y + 5 = 0

6 years ago

Answers : (1)

bharat bajaj
IIT Delhi
askIITians Faculty
122 Points
							If the equation is of circle :
xy term should be zero : A-3 = 0 , Hence A = 3
The coefficient of x^2 and y^2 should be equal :
A^2 = B + 4
Hence, B = 5 , A = 3
Thanks
Bharat Bajaj
IIT Delhi
askiitians faculty
6 years ago
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