Question

if the function f: [2, infinity)>[-1,infinity) is defined by f(x)=x^2-4x+3 then f ^-1(x)=​

Answer 1

Answer: B= 1, ∞

Step-by-step explanation:

given: f (x)=x²-4x+5

                   =x²-4x+4+1 =(x-2)²+1

 since it is given that x≥2                

          =(x-2)²+1≥1

              f(x)≥1

          hence, the codomain of f i.e. B =1, ∞

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