1.

LetD = { x in R : f(x) = sqrt((x - |x|)/(x - |x|)) "is difined"}and C be the range of the real functiong(x) = (2x)/(4 + x^(2)). "then"D cap C =

Answer»

`[-(1)/(2),(1)/(2)]`
`(0,(1)/(2))`
`R^(+)`
`R^(+)-Z^(+)`

ANSWER :B


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