The differential equation `(dy)/(dx)=(sqrt(1-y^2))/y`
determines
a family of circle with
(a) variable radii and a fixed centre at (0, 1)
(b)
variable radii and a fixed centre at `( c ) (d)(( e ) (f)0,-1( g ))( h )`
(i)
(j) Fixed radius 1 and variable centres along the
x-axis.
(k) Fixed radius 1 and variable centres along the
y-axis.
A. Variable radii and a fixed centre at (0, 1)
B. Variable radii and a fixed centre at (0, -1)
C. Fixed radius 1 and variable centre along the x-axis
D. Fixed radius 1 and variable centre along the y-axis
