To change the table settings, follow these steps.

You can change table settings from the table view by highlighting a value in the table, pressing +, and entering a new @ value.

1. Press c and then press 1 b Ü 1 2 › l to enter the function Y1=1/2x.
2. Press a Ä.
3. Select any x-value 
4. Press + to change the delta x value, and use the fraction key to enter 1/2 to view x in increments of 1/2.
5. Press =.