Skip to main content

Glossary

The following are terms to know in alphabetical order (not in an order that you should learn these concepts)

 

Coordinate System

 

Scalar

A non-vector, as in does not specify a direction. At most can only define a magnitude.

Scalar Multiplication with a Vector

Takes a scalar and a vector, and outputs a vector with the same number of dimensions. Commutative,

Geometric: Scales the magnitude of a vector without changing the direction (except in the case of negative scalars where the direction reverses)

Numeric: Multiply each element of a vector with the scalar to get an output,

3b1b

Vector

Geometric: A direction in space, where the numbers are the translation to go from the tail end of the vector to the head.

Numeric: An ordered set of numbers.

3b1b

Vector Addition

Takes 2 vectors and outputs a vector.. Commutative. Both input vectors must have the same number of dimensions, Output vector will have the same number of dimensions.

Geometric: The result of following the motion of both input vectors, one after another

Numeric: Add like terms of the input to get the output.

3b1b