Multiplying matrices

Which is equal to AA’?

• Null Matrix

• Identity Matrix

• Upper Triangular

• None

mark the correct statement

• This is an identity matrix

• this is a 4 x 5 matrix

• This is NOT a square matrix

• matrices are scary (don't pick this one!)

Determine if you are finding the sum of an identity or opposite matrix then solve.

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Determine whether the matrices are multiplicative inverses.

• Yes
• No
• Workout
• Valut-Tech

• a

• b

• c

• d

What is the identity for matrix multiplication?

• 1 1

  1 1

• 1 0

  0 1

• 0 0

  0 0

• 0 1

  1 0

What is the opposite of a normal matrix to make it able to multiply?

• Identity
• Leslie model
• Inverse
• Scalar

What is the property of matrix multiplication where IA = AI = A?

• Existence of additive identity

• Commutative Law

• Associative Law

• The existence of multiplicative identity

The identity matrix for 2 x 2 matrices is:

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