Question

A discontinuous function y =f(x) satisfying x² + y² = 4 is given by f(x) = .......................

Answer 1

x^2 + y^2 = 4

x^2 + { f (x) }^2 = 4

{ f (x) }^2 = 4 - x^2

f (x) = √( 4 - x^2)