Ch 6 Test B Review

Dimensions?

• a
• b
• c
• d

You can multiply a 2X3 matrix by which matrix?

• 2X2
• 2X12
• 3X12
• 2X3

find: B*A

• 47     30
  9     5
• 17     15
  42     35
• 10     25
  7     1
• not possible because rows do not match columns

Multiply

• 25
  25
  5
• -25
  25
  -5
• -10
  -10
  -6
• 10
  10
  6

What is a Matrix?

• An equation of over 5 numbers or symbols 
• A set of numbers in rows and columns
• A method of finding the n^th value of a series
• A complicated number system

Determine AC 

• [-10     -3]
  [8           4]
• undefined
• [10      8]
  [5       -4]
• [-2    3    5]
  [-8    4    2]

Determine CB

• [-10     -3]
  [8           4]
• undefined
• [-36   16   12]
  [-36   -20   39]
• [36   -16   12]
  [-36   20   -39]

Find the determinant of the matrix

• A
• B
• C
• D

Find the determinant of the matrix

• A
• B
• C
• D

Find the determinant of the matrix

• -7
• -17
• No Determinant
• 0