Graphing the Cosine Graph with Vertical Shift

The video tutorial explains how to graph the function G(x) = 2cos(πx) + 1. It covers the standard form of the function, identifying key components like amplitude and period, and determining critical points and the X scale. The tutorial also demonstrates how to graph the function, considering vertical translations and cyclical nature of cosine graphs.

What are critical points in the context of graphing this function?

How do you find the start and end points of the graph?

Describe the process of graphing the function after determining its transformations.