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Mathematics
Problem
- If the line
x
+
2
λ
y
+
7
=
0
x + 2\lambda y + 7 = 0
x
+
2
λ
y
+
7
=
0
is a diameter of the circle
x
2
+
y
2
−
6
x
+
2
y
=
0
x^2 + y^2 - 6x + 2y = 0
x
2
+
y
2
−
6
x
+
2
y
=
0
, then the value of
λ
\lambda
λ
is a. 1 b. 3 c. 5 d. 7
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