Graph of the product of two functions
- Enter the two linear functions in as Y1 and Y2.
- Move the cursor to enter a function for Y3.
- Use the VARS key and cursor over to Y-VARS.
- Move the cursor to 1:Function and press ENTER.
- Choose 1:Y1 and ENTER. Y1 will appear as the first part of function Y3.
- Hit the multiplication key and repeat to enter Y2.
- The screen will read Y3 = Y1 x Y2. Graph the new function.