| 1. | | Enter the function into the Input Bar to draw its graph. |
| 2. |  | Create points A and B on the x-axis by selecting the Point tool and clicking on the x-axis. |
| 3. | | Enter the parameter into the Input Bar and press Enter. A slider for n will be created automatically. |
| 4. | | Open the context menu by pressing the More button of the slider and go to Settings to change the range from 1 to 50 and increment to 1. |
| 5. | | Enter the command to graph the upper sum in the Graphics View. |
| 6. | | Move the slider to change the number of intervals for the upper sum. |
| 7. | | Hide the upper sum by selecting the enabled Visibility button on the left in the Algebra View. |
| 8. | | Enter the command into the Input Bar to graph the lower sum. |
| 9. | | Move the slider again to change the number of intervals for the lower sum. |
| 10. | | Show the upper sum again, move the slider for the number of intervals and compare both values.
Note: Change the colors of the upper and lower sum to compare them in the Graphics View.
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