Module 2

Question 1

This is a rectangular array of numbers, symbols, or expressions.

Answer 1

Matrix

Question 2

What are the symbols used to make a matrix?

Answer 2

Box Brackets

Question 3

These are the horizontal lines in a matrix.

Answer 3

Rows

Question 4

These are the vertical lines in a matrix.

Answer 4

Columns

Question 5

How do you represent a matrix with m rows and n columns?

Answer 5

“m x n” Matrix (Rows always come first before columns)

Question 6

What is the proper term for ‘m’ and ‘n’ in a matrix?

Answer 6

Dimensions

Question 7

This is a matrix where m = n and that the indexes a11, a22, a33, …, ann form the main diagonal of the matrix.

Answer 7

Square Matrix

Question 8

This is an n x n matrix where everything else except the diagonal is zero.

Answer 8

Diagonal Matrix

Question 9

This is a matrix similar to the diagonal matrix, except the diagonal is equal.

Answer 9

Scalar Matrix

Question 10

This is a matrix similar to the diagonal matrix, except the diagonal is all ones.

Answer 10

Identity Matrix

Question 11

A + B = ?

Answer 11

B + A

Question 12

(A + B) + C = ?

Answer 12

A + (B + C)

Question 13

A + 0 = ?

Answer 13

A for any m x n matrix A