1.

Let f(x)=(x)/(1+x^(2)) and g(x)=(e^(-x))/(1+|x|) (where [.] denote greatest integer function), then

Answer»

DOM `(f+g)=R~[-2,0)`
dom `(f+g)=R~[-1,0)`
range `f nn` range `g=[-2,1//2]`
range `f nn` range `g=[-(1)/(2),(1)/(2)]~{0}`

Answer :A::B::C


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