Evaluating Functions and Expressions

The video tutorial explains how to evaluate a function of two variables by substituting specific values for x and y. It demonstrates the process with two examples: F(3,1) and F(-2,3), showing each step of the calculation and simplification to find the function values.

What is the first step in evaluating a function of two variables?

• Substituting the given values for variables

• Calculating the derivative

• Simplifying the expression

• Integrating the function

In the expression 90x + 100y, what is the result when x=3 and y=1?

• 190

• 270

• 370

• 290

What is the value of 2x^2 when x=3?

• 6

• 9

• 12

• 18

What is the final calculated value of f(3,1)?

• 344

• 300

• 270

• 350

What is the result of 90x when x=-2?

• 180

• -90

• -180

• 90

In the expression -5y^2, what is the result when y=3?

• -45

• 45

• -15

• 15

What is the final calculated value of f(-2,3)?

• 73

• 65

• 80

• 70