Symmetry: Identify the symmetry in the graphs of the following equations. ? a. ?y = cos 3?x ? ? b. v? =? 3x? 4 ? 3x ? 2 + 1 ? ? c. v? 2 ? 4x ? 2 = 4

Step-by-step solution Step 1 To find the symmetry of the given functions, we use the following test: If a function f satisfies f(x) = f(x) for every number x in its domain, then f is called an even function. Even functions are symmetric about the y-axis. If a function f satisfies f(x) =f(x) for every number x in its domain, then f is called an odd function. Odd functions are symmetric about the origin.