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1.Reprezentaţi grafic funcţiile: a)f: RR,f(x)=2x+1; c)f: RR,f(x)=1; e)f: R R.f(x)=0,2x-3; 2.Reprezentati grafic funtin C b)f: RR,f(x)=2x; d)f: RR,f(x)=-x; ff: RR,f(x)=√2x-1.​