If f:R→R and g:R→R defined by
f(x)=x and g(x)=x−3 for
x∈R [⋅] is denotes greatest integer function then gf(x):−85<x<85=
{0,1}
{1,2}
{-3,-2}
{2,3}
−85<x<85⇒0≤x<85⇒0≤f(x)<85 0≤f(x)<1⇒gf(x)=-3 1≤f(x)<1.6⇒gf(x)=-2