Question

A function f is defined as : f(x) = 5 – x for 0 ≤ x ≤ 4. Find the value of x such that f(x) = 3

Answer 1

f(x) = 5 – x for 0 ≤ x ≤ 4

f(x) = 3

∴ 5 – x = 3

∴ x = 2.