Grade 12Analytical Geometry
if the circles x2+y2-6x-8y-24=0 and 3x2+3y2+2gx+2fy+c=0 are concentric then (g,f) =
if the circles x2+y2-6x-8y-24=0 and 3x2+3y2+2gx+2fy+c=0 are concentric then (g,f) =
1 Answer
Arun
Approved Tutor Answer8 Years agoFirst convert them in a form.
x² + y² -6x - 8y -24 = 0
&
x² + y² + 2g/3 x + 2f/3 y + c/3 = 0
Now
2g/3 = -6
g = -9
2f/3 = -8
f = -12
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