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Mathematics
Mathematics
Problem
The equation of the circle drawn with the focus of the parabola
(
x
−
1
)
2
−
8
y
=
0
(x-1)^2 - 8y = 0
(
x
−
1
)
2
−
8
y
=
0
as its centre and touching the parabola at its vertex is : (A)
x
2
+
y
2
−
4
y
=
0
x^2 + y^2 - 4y = 0
x
2
+
y
2
−
4
y
=
0
(B)
x
2
+
y
2
−
4
y
+
1
=
0
x^2 + y^2 - 4y + 1 = 0
x
2
+
y
2
−
4
y
+
1
=
0
(C)
x
2
+
y
2
−
2
x
−
4
y
=
0
x^2 + y^2 - 2x - 4y = 0
x
2
+
y
2
−
2
x
−
4
y
=
0
(D)
x
2
+
y
2
−
2
x
−
4
y
+
1
=
0
x^2 + y^2 - 2x - 4y + 1 = 0
x
2
+
y
2
−
2
x
−
4
y
+
1
=
0
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