Using Graph of Function

[nycmath]

Precalculus
Michael Sullivan
Edition 10
Chapter 2, Section 2.3

The graph of f is given.
Use the graph to find:

A. The intercepts, if any

B. The domain amd range

C. The intervals on which the function is decreasing, increasing, or constant.

30 (a)

Intercepts: (-pi, 0), (0, 1), (pi, 0)

30 (b)

Domain = [-pi, pi]

Range = [-1, 1]

30 (c)

Increasing = (-pi, 0)

Decreasing = (0, pi)

30 (d)

The function is even because it is symmetric with respect to the y-axis.

You say?

[Eigenvalue]

Yes, this is correct. The function from the problem is y=cos(x)