TI-89 Calculator Operations and Evaluations

This tutorial demonstrates how to evaluate mathematical expressions using the TI-89 graphing calculator. It begins with clearing the calculator's screen and stored values. The tutorial then guides through evaluating expressions with one and two variables, using specific examples and calculator functions. The video concludes with a summary of the process and encourages viewers to find the tutorial helpful.

What is the first step to take before starting a new problem on the TI-89 calculator?

• Press F1 and select option 1

• Use the new problem function under F6

• Clear the memory manually

• Turn off the calculator

What is the result of evaluating the expression x^2 - 5x - 7 when x equals -2?

• -7

• 0

• -14

• 7

When entering expressions with two variables on the TI-89, what must you remember to include?

• Multiplication between the variables

• Parentheses around each variable

• A semicolon at the end

• A comma between the variables

How do you specify multiple variable values on the TI-89 calculator?

• Separate them with a comma

• Enter them on separate lines

• Use a semicolon between them

• Use the word 'and' between them

What is the result of evaluating the expression -3x^2y + 5xy^2 when x = -1 and y = -3?

• -18

• -36

• 36

• 0