How to understand even functions and how we can determine a function is even

The teacher engages students in a discussion about even functions, focusing on their symmetry properties. Students are asked to recall what they know about even functions, particularly their symmetry about the Y-axis. The teacher explains the concept of symmetry using examples and defines even functions as those where f(-x) equals f(x). The session concludes with a warm-up exercise to reinforce the concept.

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