unlike other object , the math object has no constructor. all methods and properties can be used without creating the math object first
MAth Round(x)
MAth Ceil()
MAth floor()
MAth trunc()
MAth sign()
MAth pow()
MAth sqrt()
MAth abs()
MAth sin()
MAth cos()
MAth min()
MAth max()
MAth random()
MAth log()
MAth log2()
MAth log10()