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Mathematics
Mathematics
Problem
The locus of the centre of a circle which passes through the origin and cuts-off a length
2
b
2b
2
b
from the line
x
=
c
x = c
x
=
c
is a.
y
2
+
2
c
x
=
b
2
+
c
2
y^2 + 2cx = b^2 + c^2
y
2
+
2
c
x
=
b
2
+
c
2
b.
x
2
+
c
x
=
b
2
+
c
2
x^2 + cx = b^2 + c^2
x
2
+
c
x
=
b
2
+
c
2
c.
y
2
+
2
c
y
=
b
2
+
c
2
y^2 + 2cy = b^2 + c^2
y
2
+
2
cy
=
b
2
+
c
2
d.
x
2
+
c
y
=
b
2
+
c
2
x^2 + cy = b^2 + c^2
x
2
+
cy
=
b
2
+
c
2
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