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Mathematics
Mathematics
Problem
If
a
a
a
be the radius of a circle which touches
x
x
x
-axis at the origin, then its equation is - (A)
x
2
+
y
2
+
a
x
=
0
x^2 + y^2 + ax = 0
x
2
+
y
2
+
a
x
=
0
(B)
x
2
+
y
2
±
2
y
a
=
0
x^2 + y^2 \pm 2ya = 0
x
2
+
y
2
±
2
y
a
=
0
(C)
x
2
+
y
2
±
2
x
a
=
0
x^2 + y^2 \pm 2xa = 0
x
2
+
y
2
±
2
x
a
=
0
(D)
x
2
+
y
2
+
y
a
=
0
x^2 + y^2 + ya = 0
x
2
+
y
2
+
y
a
=
0
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