Just like a number has a reciprocal ... ... And there are other similarities

A Matrix is an array of numbers: A Matrix (This one has 2 Rows and 3 Columns). To multiply a matrix by a single number, we multiply it by every...

An inverse function goes the other way! Let us start with an example: Here we have the function f (x) = 2x+3, written as a flow diagram:

Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents.

We can calculate the Inverse of a Matrix by: calculating the Matrix of Minors,. then turn that into the Matrix of Cofactors,.

Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents.

And by ALSO doing the changes to an Identity Matrix it magically turns into the Inverse! The "Elementary Row Operations" are simple things like adding rows, multiplying and swapping ...

Math explained in easy language, plus puzzles, games, quizzes, worksheets and a forum. For K-12 kids, teachers and parents.

They have many uses ... A simple example is that an eigenvector does not change direction in a transformation ... How do we find that vector?

Hi there! This page is only going to make sense when you know a little about Systems of Linear Equations and Matrices, so please go and learn about those if you don't know them already.