DerivativeApplications

# 3. symmetry

A function is **even** if f(-x) = f(x), that is, if its graph is symmetric with respect to y-axis:

A function is **odd** if f(-x) = -f(x), that is, if its graph shows rotational symmetry with respect to the origin:

**Exercise**: study the symmetry of these functions:

Solutions: a) f is an odd function; d) g is neither odd nor even function

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