# Mathematics

Articles and tutorials about mathematics

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Algebra Cheat Sheet

Algebra cheat sheet for Arithmetic Operations, Exponent Properties, Properties of Radicals, Properties of Inequalities, Properties of Absolute Value, Distance Formula, Complex Numbers, Logarithms and Log Properties, Factoring Formulas, Quadratic Formula, Square Root Property, Absolute Value Equations/Inequalities, Completing the Square, Constant Function, Line/Linear Function, Parabola/Quadratic Function, Circle, Ellipse, Hyperbola, Common Error and Reason/Correct/Justification/Example

Algebra Cheat Sheet

Algebra cheat sheet for Arithmetic Operations, Exponent Properties, Properties of Radicals, Properties of Inequalities, Properties of Absolute Value, Distance Formula, Complex Numbers, Logarithms and Log Properties, Factoring Formulas, Quadratic Formula, Square Root Property, Absolute Value Equations/Inequalities, Completing the Square, Constant Function, Line/Linear Function, Parabola/Quadratic Function, Circle, Ellipse, Hyperbola, Common Error and Reason/Correct/Justification/Example

Linear interpolation and extrapolation with calculator

Linear interpolation is a mathematical method of using the equation of a line in order to find a new data point, based on an existing set of data points. Linear extrapolation is the same as linear interpolation, with the exception of the new data points, which are outside the range of the given (known) data points.

How to calculate the centroid of an area

In this article we are going to explain how to calculate the centroid of an area through numerical integration. The area will be defined as the zone under a curve, delimited by data points. The centroid of an area is equivalent with the centre of gravity of a body.