Question

determine the period.

Explanation:

Step1: Understand the period concept

The period of a periodic function is the horizontal distance between two consecutive identical points (e.g., two consecutive minima).

Step2: Calculate the period

The two minima are at \(x = 4\) and \(x=19\). The period \(T\) is \(19 - 4=15\).

Answer:

\(15\)