Answer
TRUE
Step-by-step explanation:
We can easily solve this question by using a graphing calculator or any plotting tool, to check if it is a sinusoid.
The function is
f(x) = 2*cos(π*x) + sin(π*x)
Which can be seen in the picture below
We can notice that f(x) is a sinusoid. It has periodic amplitudes, and the function has a period T = 2
The maximum and minimum values are
Max = 2.236
Min = -2.236
