http://www.buzzfeed.com/louispeitzman/a-guide-t... On a show as expansive and diverse as Orange Is the New Black, it can be hard to get a handle on ... A Guide To The Cast Of Orange Is The New Black.
Principal Square Root. The unique nonnegative square root of a nonnegative real number. For example, the principal square root of 9 is 3, although both and 3 are square roots of 9.
Square Roots: Note that any positive real number has two square roots, one positive and one negative. For example, the square roots of 9 are -3 and +3, since (-3) 2 = (+3) 2 = 9. Any nonnegative real number x has a unique nonnegative square root r; this is called the principal square root ..........