Circle - AG

Find the coordinates of circle and its diameter if its equation is:

x2+y26x4y=36


Correct result:

x1 =  3
y1 =  2
D =  14

Solution:

x2+y26x4y=36 (x3)2+(y2)23222=36 (x3)2+(y2)2=49 (xx1)2+(yy1)2=r2 x1=3
y1=2
r=49=7 D=2 r=2 7=14



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Showing 1 comment:
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Math student
why is x =3 =0?

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