Question

Findthe domain of the function f(x) = √19-x​

Answer 1

(-∞, 19]

Explanation:

The domain of this function is only true for all real values of f(x).

That means the lower limit of the function is -∞ as the values are positive, and the upper limit is 19, because that is the greatest value it can become before becoming negative.

The domain is : (-∞, 19]

Answer 2

(-∞,19)

Definition: The domain of a function is the set of input or argument values for which the function is real and defined