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Mathematics
Mathematics
Problem
The equation of the circle passing through
(
2
,
0
)
(2, 0)
(
2
,
0
)
and
(
0
,
4
)
(0, 4)
(
0
,
4
)
and having the minimum radius is a.
x
2
+
y
2
=
20
x^2 + y^2 = 20
x
2
+
y
2
=
20
b.
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
c.
(
x
2
+
y
2
−
4
)
+
λ
(
x
2
+
y
2
−
16
)
=
0
(x^2 + y^2 - 4) + \lambda(x^2 + y^2 - 16) = 0
(
x
2
+
y
2
−
4
)
+
λ
(
x
2
+
y
2
−
16
)
=
0
d. None of the above
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