## Percentage Change

What Is Percentage Change? Percentage change can be applied to any quantity. Let’s say you are tracking the the grow of height. If the height increased, use the formula (New Height – Old Height)/Old Height Then, multiply that number by 100%. If the price decreased, use the formula (Old Height – New Height)/Old Height Then … Continue reading "Percentage Change"

## Zero Product Property

Definition If   a × b = 0   then   a = 0   or   b = 0   or  a = b = 0 A product of factors is zero if and only if one or more of the factors is zero. Standard Form of an Equation The Standard Form of an equation is: “some expression” = 0 Learn More Partial Sum General Form of … Continue reading "Zero Product Property"

## Partial Sum

A series is the sum of the terms in a sequence (not the list of terms, like a sequence). The series with a finite number of terms is a easy to find the sum of the series just by adding the terms. However, for the series with an infinite number of terms, the summation is more difficult and complicated. … Continue reading "Partial Sum"

## Prime Factorization

Prime Numbers A Prime Number is a whole number greater than 1 that can not be made by multiplying other whole numbers. The number that we can make by multiplying other whole numbers is a Composite Number. Factors Factors are the numbers you multiply together to get another number 4 × 2 = 8 From … Continue reading "Prime Factorization"

## Common Derivatives

Derivative of a function of a real variable measures the sensitivity to change of the function value (output) with respect to a change in its argument (input). Derivatives are a fundamental tool of calculus. The derivative of a function of a single variable at a chosen input value (when it exists) is the slope of the tangent … Continue reading "Common Derivatives"

## General Form of Equation of a Line

Definition General Form of the equation of a straight line is: Ax + By + C = 0 Note: A or B can’t be zero at the same time. (if A = 0 then B ≠ 0, vice versa) The General Form is not always the most useful form, and you may prefer to use: Slope-Intercept Form … Continue reading "General Form of Equation of a Line"