Transpose/Identity/Zeros Matrices

• 2

• 7

• 4

• -3

• 2x3

• 3x2

• 3x4

• 4x3

What is a₂₃

• 14

• 4

• 1

• 3

If A is a 2 × 3 matrix, and B is a 3 × 4 matrix, how many columns does AB have?

• 2

• 3

• 4

• AB is not defined

What comes first in the dimension?

• Row

• Column

• 
• 
• 
• 

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

• a

• b

• c

• d

If matrix A is a 2 x 5, and is transposed, what are the new dimensions?

• 2 x 2

• 5 x 2

• 5 x 5

• 2 x 5