Operations with Matrices and Determinants

Add

• 11    8
  -4     2

• 3     2
  -6    -6

• -3    2
  -4    -6

• 10    8
  -6    2

How many rows are in a 7 x 3 matrix?

• 7

• 3

• 21

• 10

The number of columns in a 2x12 matrix is?

• 10

• 24

• 12

• 2

Find B-A

• -4     0
  6     -1

• 1     0
  1     -4

• 4       0
  -6     1

• not possible because rows do not match columns

Evaluate the determinant.

• 30

• -9

• -26

• -30

Find det(A)

• 20

• -20

• 60

• -60

• A
• B
• C
• D

What is the determinant of this matrix?

• -2

• 2

• 10

• 24

Evaluate the Determinant.

• -66

• 44

• 68

• -44

• -68

Evaluate the determinant. Type the answer in the space given. (Type the number ONLY.)