Matrix Equations

A __________ matrix is a matrix with rows = columns.

• Same

• Equal

• Big

• Square

Select the square matrices

• 
• 
• 
• 

What is A^-1?

• 
• 
• 
• 

Find the product.

• undefined
• -3   16
  17   12
  8   -10
• 3   12 
  -15  -8
  -1   -3

Find the determinant's value

• -18
• -23
• -2
• 2

Calculate the determinant

• 0
• none
• -32
• -8

What must be true in order to ADD two matrices?

• They must be square.

• The dimensions must be the same.

• The determinant can't equal 0.

• The column of the 1st must equal the row of the 2nd.

What must be true in order to MULTIPLY two matrices?

• They must be square.
• The dimensions must be equal.
• The determinant can't equal 0.
• The #of columns of the 1st must equal the # of rows of the 2nd.

What comes first in the order?

• Row
• Column
• The Egg
• The Chicken

When a 3x6 matrix is multiplied by a 6x5 matrix, what will the dimensions of the product be?

• 6x6
• 3x6
• 3x5
• 5x6