## Completing the Square: Definition, Formula / Steps, Examples

What is Completing the Square  Completing the square is one of method to solve quadratic form. Base concept that used in this method are: (a+b)2 = a2 + 2ab +b2 (a-b)2 = a2 – 2ab +b2 Sometimes, if quadratic form cannot be solved (can be solve hardly) by factorization method, it can use completing the square method. It is

## Bayes’ Theorem: Definition, Notation, Examples

Thomas Bayes named a theory about conditional probability. He was British mathematician in 18th century. The theorem is Bayes’ Theorem. Bayes’ theorem is used in statistics, medicine and pharmacology, finance, etc. Definition of Bayes’ Theorem Bayes’ theorem is a probability theorem when we have known another probability before. If the probability of blue ball outcomes is

## Obtuse Angles

An Obtuse Angle is more than 90° but less than 180° Examples More Examples of obtuse angles Which is Obtuse Angle? Remember to look carefully at which angle you are being asked to name. The obtuse angle is the smaller angle. It is more than 90° and less than 180°. The larger angle is a

## Factorial !

The factorial function (using symbol: !) says to multiply all whole numbers from our chosen number down to 1. So n! (read “n factorial”) means n × (n-1) × (n-2) × … × 3 × 2 × 1 Definition of Factorial What is the Factorial function? The factorial function is a function represented by an exclamation mark