Matrix introduction review

Dimension

• a
• b
• c
• d

What would two matrices need to be considered 'equal'?

• The same dimensions and different element values
• The same dimension and the same element values
• Two matrices can never be equal
• two matrices are 'equal' when they are added together to create a matrix of only "0's"

What are the dimensions of this matrix?

• 2 x 3
• 3 x 2
• 6 x 1
• 1 x 6

In Matrix R (pictured) what is the value of element R₃₂

• 8
• 9.01
• 6
• 1

In Matrix R (pictured) what is the value of element R₁₃

• 8
• 9.01
• 3
• 1

What is the name of each entry of a matrix?

• Row
• Element
• Dimension
• Rectangle

How many rows are in a 7 x 3 matrix?

• 7
• 3
• 21
• 10

How many columns are in a 5 x 4 matrix?

• 5
• 4
• 20
• 9

What comes first in the order?

• Row
• Column

Value of element a₂₃

• -2
• -1
• 7
• 15