The variables panel allows you to modify the value of any free variable and update several graphs without editing a single equation.
Edit boxes
In the top ("a=") section,
| from | is the value to start calculating the value of the parameter a from. |
| to | is the maximum value a can take (or minimum if step by is negative) |
| step by | is the amount to increment a by between each graph. |
Uses of a are described in Graphing Families of Functions.
| b = | is the value to assign to the free variable b |
| c = | is the value to assign to the free variable c |
| j = | is the value to assign to the free variable j |
| k = | is the value to assign to the free variable k |
Uses of b, c, j, and k are described in Using Free Variables.
The other lines are reminders of the values of the built-in constants.
Buttons
Update finds all equations using the free variables you have most recently modified and makes a copy of each one using the new value(s), then graphs the new equations. This allows you to modify the value of a parameter in several equations simultaneously without editing any of them!
Help calls up this help screen