F(x)= 2 cos π x + sin π x is a sinusoid.

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

choice b is correct

step-by-step explanation:

we have been given the following system of linear inequalities;

we are required to graphically determine the solution to these system of inequalities. using a graphing tool, the solution is as shown in the attachment below;