Pre-Calculus Flashcard Matrix Basics

Front

What is the name of each entry of a matrix?

Back

Element

Front

What is a Matrix?

Back

A set of numbers in rows and columns.

Front

Multiply the following matrices: \[ \begin{pmatrix} 1 & 8 & 3 \\ 11 & 4 & 5 \end{pmatrix} \]

Back

\[ \begin{pmatrix} -20 & 15 & -10 \\ 30 & -5 & 0 \end{pmatrix} \]

Front

What is the entry at f₄₂?

Back

99

Front

Complete the statement: Entries (or elements) in a matrix are determined by their _____ position.

Back

row, column

Front

What is the dimension of a matrix with 3 rows and 4 columns?

Back

3 x 4

Front

What is a row in a matrix?

Back

A horizontal line of elements in a matrix.

Front

What is a column in a matrix?

Back

A vertical line of elements in a matrix.

Front

How do you denote the element in the 2nd row and 3rd column of a matrix A?

Back

A₂₃

Front

What is the zero matrix?

Back

A matrix in which all elements are zero.