Matrices and Data Holt Algebra 2
Definitions Matrix is a rectangular arrangement of numbers into rows and columns Dimensions are read row x column Address is read through the location 8/1/2018 2:24 AM 4.1 Matrix Operations
Reading Matrices A12 ROW A11 A13 A21 A23 A22 COLUMN 2 3 2 x 3 5 A13 How many total rows does it have? How many total columns does it have? What are its dimensions? What is the entry of A22? What is the address of 3? 3 2 x 3 Row X column Row 2 column 2 5 A13 Row 1 column 3
-3 4 -8 2 -8 16
Entering a Matrix into the calculator: Push 2nd x-1 Arrow over to edit, use up and down arrows to select matrix name, enter Enter number of rows, Enter number of columns, Enter each entry followed by enter. 2nd quit to “save” the information in the Matrix 2---enter 2---enter -3--enter 4---enter 2---enter -8---enter
Entering a Matrix into the calculator: Push 2nd x-1 Arrow over to edit, arrow down to B to select matrix name, enter Enter number of rows, Enter number of columns, Enter each entry followed by enter. 2nd quit to “save” the information in the Matrix 2---enter 1---enter -8--enter 16---enter
Using the matrix once it is entered: 2nd x-1 1---enter x-1 ---enter 2---enter enter -1 x = 0 and y = -2
4 -2 3 -2 2 2 5 16 -5 -2 8 4
Entering a Matrix into the calculator: Push 2nd x-1 Arrow over to edit, use up and down arrows to select matrix name, enter Enter number of rows, Enter number of columns, Enter each entry followed by enter. 2nd quit to “save” the information in the Matrix 3---enter 3---enter 4--enter -2---enter 3---enter 2--enter 2--enter 5--enter 8--enter -5--enter -2--enter
Entering a Matrix into the calculator: Push 2nd x-1 Arrow over to edit, arrow down to B to select matrix name, enter Enter number of rows, Enter number of columns, Enter each entry followed by enter. 2nd quit to “save” the information in the Matrix 3---enter 1---enter -2--enter 16---enter 4---enter
Using the matrix once it is entered: 2nd x-1 1---enter x-1 ---enter 2---enter enter -1 x = 5 and y = 8 and z = -2
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