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Sets, Relations & Functions

Quick practice

Question 1 of 5

If the domain of function $f(x)=x^{2}-6 x+7$ is $(-\infty, \infty)$ , then the range of function is

A

(-2,∞)

B

(-∞,-2)

C

(-2,3)

D

(-∞,∞)

Concepts

Set Theory

Function

Relation