What is the domain and range of $f (x) = 7$ $f(x)=7$ ?

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Answer 1 · 2016-04-27T20:45:18

Domain - all real numbers.
Range - only one number $y = 7$ $y=7$ .

This is a function defined for all real arguments $x$ $x$ , so its domain is all real numbers $(- \infty, + \infty)$ $(-oo,+oo)$ .

Since for any value of an argument the function takes a value of $7$ $7$ , its range is one and only one real number $y = 7$ $y=7$ .

What is the domain and range of f(x)=7f(x)=7?