TechMathII - 1.6 - Matrices

Bell Ringer ,[object Object],[object Object],[object Object],[object Object],[object Object]

What is a Matrix? ,[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[ ] 2 4 6 9 5 3 This is a 3 x 2 matrix Because you have 3 rows and 2 columns

You try! Name These Matrices! [ ] 4 5 6 2 3 4 [ [ ] ] ,[object Object],[object Object],[object Object],[object Object],[object Object]

[ ] 4 5 6 2 3 4 [ [ ] ] ,[object Object],[object Object],[object Object],[object Object],[object Object],Naming the Position 1. a21 2. a33 3. a11

[ ] -2 9 1 4 7 0 [ [ ] ] 2 -1 6 0 4 6 1 -8 3 6 9 8 ,[object Object],[object Object],You try! 1. a13 2. a24 3. a21

ADDING MATRICES ,[object Object],[object Object],[object Object]

Definitions ,[object Object],[object Object]

EXAMPLE #1 ] [ [ ] 5.3 7.4 + 8.5 9.1 [ ] = = [ ]

EXAMPLE #2 [ ] [ [ ] ] 2 7 3 5 9 4 + 5 6 4 2 3 2 = = [ ]

YOU TRY [ ] [ [ ] ] ,[object Object],[object Object],[object Object],+ ,[object Object],[object Object],[object Object],= = [ ] __ by __ matrix

SUBTRACTION The same rules as addition apply. [ ] [ [ ] ] 5 8 3 6 - ,[object Object],[object Object],= = [ ]

SUBTRACTION The same rules apply as for addition [ ] [ [ ] ] 8 4 7 9 - -2 3 5 -11 = = [ ]

YOU TRY [ ] [ [ ] ] - = = [ ] __ by __ matrix 5 -7 9 2 4 -6 8 -7 5 2 -3 5 6 -3 7 -5 9 1

TechMathII - 1.6 - Matrices

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TechMathII - 1.6 - Matrices