A discontinuous function y = f(x) satis...

A discontinuous function `y = f(x)` satisfying `x^2 + y^2= 4` is given by `f(x) = ....`

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The correct Answer is:

`f(x)=sqrt(4-x^(2))`

Given, ` x^(2) + y^(2) = 4 rArr y = sqrt(4-x^(2)) `
or `" " f(x) - sqrt( 4- x^(2)) `

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