Question 29: Let the function y = f (x) be determined, continuous on \(\mathbb{R}\) and have a graph as shown below. Find the number of extreme points of the function y = f( |x|)

Draw a graph of the function y=f(|x|) from the graph of the function f(x)

+) Keep the graph of the function f(x) to the right of the Oy axis. Remove the part of the graph f(x) to the left of the Oy axis.

+) Symmetry the part of the graph f(x) to the right of the Oy axis through Oy

Based on the graph of the function y=f(|x|) inferring the function y=f(|x|) has 3 extreme points

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