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...

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

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

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.

Enter your matrix in the cells below A or B. ... Or you can type in the big output area and press to A or to B (the calculator will try its best to interpret your data).

4×0.6+7×−0.2 4×−0.7+7×0.4 2×0.6+6×−0.2 2×−0.7+6×0.4

A vector has magnitude (how long it is) and direction ... Here are two vectors

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

A vector has magnitude (how long it is) and direction: Two vectors can be multiplied using the Cross Product (also see Dot Product).

Ah, the familiar four basic operations ... But there is more to the story ... Addition says how many steps to take.