Matrix Operations and Determinants on TI-84 Plus CE

What is the convention for naming matrices?

• Number of rows by number of elements

• Number of rows by number of columns

• Number of elements by number of rows

• Number of columns by number of rows

When can two matrices be added or subtracted?

• When they have the same dimensions

• When they have the same number of columns

• When they have the same number of rows

• When they have the same elements

How do you access the matrix menu on the TI-84 Plus C II calculator?

• Press 2nd and the X to the negative 1 button

• Press 2nd and the Mode button

• Press Alpha and the X to the negative 1 button

• Press Alpha and the Mode button

What is the default size of a new matrix on the TI-84 Plus C II calculator?

• 2 by 2

• 1 by 1

• 3 by 3

• 4 by 4

How do you change the size of a matrix on the TI-84 Plus C II calculator?

• By pressing the Mode button

• By typing the new dimensions and pressing Enter

• By selecting the Edit menu and pressing Clear

• By selecting the Math menu and pressing Enter

Which operation is performed by pressing the plus sign between two matrices?

• Multiplication

• Addition

• Division

• Subtraction

How can you multiply a matrix by a constant on the TI-84 Plus C II calculator?

• By selecting the matrix and pressing the division sign followed by the constant

• By selecting the matrix and pressing the subtraction sign followed by the constant

• By selecting the matrix and pressing the addition sign followed by the constant

• By selecting the matrix and pressing the multiplication sign followed by the constant

What is the first step to find the determinant of a matrix on the TI-84 Plus C II calculator?

• Press 2nd and the Mode button

• Press 2nd and the X to the negative 1 button

• Press Alpha and the X to the negative 1 button

• Press Alpha and the Mode button

Which menu do you navigate to for selecting the determinant option?

• Alpha

• Math

• Names

• Edit

How do you find the determinant of a matrix resulting from an operation?

• Select the matrix and press Enter

• Select the entry and press Enter

• Select the answer and press Enter

• Select the constant and press Enter