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$If a function f : [2, \infty) \to B defined by f (x) = x^{2} - 4 x + 5 is a bijection, then B is equal to$

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Correct option is B

fx= x2 -4x+5 = x-22 +1 ≥1 for all x∈[2 ,∞)Range of fx =[1 ,∞) = Codomain B , since f is onto

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If a function f:[2,∞)→B defined by f(x)=x2−4x+5 is a bijection, then B is equal to

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Ready to Test Your Skills?

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$If a function f : [2, \infty) \to B defined by f (x) = x^{2} - 4 x + 5 is a bijection, then B is equal to$