Adding and Subtracting Matrices

Add

• 11    8
  -4     2

• 3     2
  -6    -6

• -3    2
  -4    -6

• 10    8
  -6    2

Subtract

• 3    -8
  0   -1

• 3   -4
  8  -13

• -3   8
  0    1

• 3   -8
  -8    1

Find B-A

• -3     1
  7     -1

• 1     0
  1     -4

• -4       0
  6     -1

• not possible because rows do not match columns

Find the values of x, y and z.

• w = 13, x = 4, y = 7, z = 23

• w = 13, x = -4, y = 11, z = 23

• w = 13, x = 4, y = 11, z = 23

• w = 13, x = 4, y = 11, z = 17

Find B-A

• -3     1
  7     -1

• 1     0
  1     -4

• 4       0
  -6     1

• not possible because rows do not match columns

What is the condition of adding and subtracting 2 matrices?

• Two matrices can be added and substracted even they have different size.

• Two matrices can be added and subtracted if they have the same size.

• A

• B

• C

• D

Find the sum of the matrices A = [[2, 3], [4, 5]] and B = [[1, 2], [3, 4]].

• [[3, 5], [7, 9]]

• [[1, 3], [2, 4]]

• [[5, 7], [9, 11]]

• [[6, 8], [10, 12]]

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Find X - V

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• Does Not Exist