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Mathematics
Mathematics
Problem
Identify the centre of the circle
x
2
+
y
2
+
2
g
x
+
2
f
y
+
c
=
0
x^2 + y^2 + 2gx + 2fy + c = 0
x
2
+
y
2
+
2
g
x
+
2
f
y
+
c
=
0
. a)
(
g
,
−
f
)
(g, -f)
(
g
,
−
f
)
b)
(
−
g
,
−
f
)
(-g, -f)
(
−
g
,
−
f
)
c)
(
g
,
f
)
(g, f)
(
g
,
f
)
d)
(
−
g
,
f
)
(-g, f)
(
−
g
,
f
)
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