A function f : A R is defined by the equation f(x)=x^2-4x+5 where A=(1, 4). What is the range of the function?

NDA 2018 Mathematics question

A function is defined by the equation where . What is the range of the function?

Answer: (C)

. On the minimum is (attained). As , , and as ,

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Question ID VK-029011