Absolute Maximum
A function has its absolute maximum at x = a if the ordenate is greater than or equal to any point in the domain of the function.
a = 0
Absolute Minimum
A function has its absolute minimum at x = b if the ordenate is less than or equal to any point in the domain of the function.
b = 0
Relative Maximum and Minimum
A function, f, has a relative maximum at point, a, if f(a) is greater than or equal to the points near the point a.
A function, f, has a relative minimum at point b, if f(b) is less than or equal to the points close to point b.
a = 3.08 b = -3.08