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...

Wow! What a mouthful of words! But the ideas are simple. The Commutative Laws say we can swap numbers over and still get the same answer ...

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

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

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

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

Also called Dirac Notation. ... Bra-Ket is a way of writing special vectors used in Quantum Physics that looks like this

Inequality tells us about the relative size of two values. ... (You might like to read a gentle Introduction to Inequalities first)

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

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