## Common Factor

Definitions Factors are numbers we multiply together to get another number. When we find the factors of two or more numbers, and then find some factors are the same (common), they are the common factors. Factors of two (or more) numbers have in common are called the common factors of those numbers. Example Learn More Greatest Common … Continue reading "Common Factor"

## Integration by Substitution (Reverse Chain Rule)

Definition Integration by Substitution (also called “The Reverse Chain Rule” or “u-Substitution” ) is a method to find an integral, but only when it can be set up in a special way. It is an important method in mathematics. Integration by substitution is the counterpart to the chain rule for differentiation. When it is possible to perform … Continue reading "Integration by Substitution (Reverse Chain Rule)"

## Discrete and Continuous Data

Data is defined as the facts & collected for the analysis purpose. Data is divided into qualitative data (descriptive) & quantitative data. The qualitative data cannot be measured in terms of numbers. On the other hand, quantitative data is one that contains numerical values and uses range. It is divided into discrete data & continuous data. Discrete data … Continue reading "Discrete and Continuous Data"

## Injective, Surjective & Bijective

Definition of Function Injective A function f is injective if and only if whenever f(x) = f(y), x = y. Surjective f is surjective if and only if f(A) = B A function f (from set A to B) is surjective if and only if for every y in B, there is at least one x in A such that f(x) = y Bijective … Continue reading "Injective, Surjective & Bijective"

## 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 … Continue reading "Obtuse Angles"

## 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 … Continue reading "Factorial !"