Evaluating Functions with Desmos

The video tutorial explains how to evaluate the function f(x) = 2/(5x + 3) at x = 10 using a calculator, specifically Desmos. It guides viewers through entering the function into the calculator and obtaining the result by evaluating f(10). The tutorial emphasizes typing the function exactly as it appears and using the calculator to find the answer efficiently.

What is the function f(x) given in the video?

• f(x) = 5/(2x) + 3

• f(x) = 2x/5 + 3

• f(x) = 2x + 5

• f(x) = 2/(5x) + 3

Which tool is recommended for evaluating the function?

• Desmos

• Microsoft Excel

• Google Sheets

• Graphing calculator

What is the first step in using Desmos to evaluate the function?

• Guess the value

• Use a different equation

• Draw the graph manually

• Type the function as you see it

What value of x are we evaluating in the function f(x)?

• x = 5

• x = 10

• x = 3

• x = 2

What should you do after typing f(10) in Desmos?

• Change the function

• Ignore the result

• Type the answer you get

• Recheck the equation