Question

Find the range of the following

function given that
f(x) = x² + 4
Domain: 3 < x < 1

Answer 1

range : 5 < y < 13

Explanation:

to find the range, that is the corresponding values of y from the given domain - 3 < x < 1

substitute the end values of the domain into the function f(x)

f(- 3) = (- 3)² + 4 = 9 + 4 = 13

f(1) = 1² + 4 = 1 + 4 = 5

then range : 5 < y < 13