Square Matrix

Find the inverse of the matrix (if it exists).

• 
• 
• 
• Does not exist.

Find the inverse of the matrix. (HINT: The formula is the quickest since this is 2x2.)

• 
• 
• 
• Does not exist.

Which of the following statements are true. Select all that apply.

• AB = I

• BA = I

• A is the inverse of B

• B is the inverse of A

When the product of two square matrices is the identity matrix, the matrices are always inverses of one another.

• True

• False

Which of these matrices are SQUARE matrices? Check all that apply!

• V

• W

• X

• Y

• Z

Which of these matrices are SQUARE matrices? Check all that apply!

• V

• W

• X

• Y

• Z

Which of the following is a square matrix?

• B

• F

• D

• A

find: B*A

• 47     30
  9     5

• 17     15
  42     35

• 10     25
  7     1

• not possible because rows do not match columns

Which of the following is NOT a square matrix?

• Diagonal matrix

• Identity matrix

• Triangular matrix

• zero matrix

In Matrix R (pictured) what element is r₂₃?

• 8

• 9.01

• 6

• 1