persamaan lingkaran :
(x-1)^2 + (y-4)^2 = r^2
x^2 + y^2 -2x - 8y + 17 = r^2
melalui titik (2,3) :
2^2 + 3^2 -2(2) -8(3) +17 = r^2
...
r^2 = 2
Sehingga persamaan Lingkarannya adalah :
x^2 + y^2 - 2x -8y + 15 = 0
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persamaan lingkaran :
(x-1)^2 + (y-4)^2 = r^2
x^2 + y^2 -2x - 8y + 17 = r^2
melalui titik (2,3) :
2^2 + 3^2 -2(2) -8(3) +17 = r^2
...
r^2 = 2
Sehingga persamaan Lingkarannya adalah :
x^2 + y^2 - 2x -8y + 15 = 0