Rational function with radical is it even or odd?

The video tutorial explains the concept of even functions by demonstrating how plugging in negative X results in the same function value as positive X. It uses quadratic functions as an example to illustrate this property. A practical example with X=2 is provided to show the symmetry of even functions. The tutorial concludes with a brief introduction to polynomial functions.

Describe how the quadratic function serves as an example of an even function.

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What is the significance of the symmetry of a function in relation to even functions?

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