User guide

The variables seen as x, y, z, t are known as global variables which are

referenced in other areas of the calculator. If you store the value of x as

a constant, the calculator will not recognize x as a variable in later screens.

This will cause problems when we discuss graphing y = x later in this manual.

Instead you will have a graph of y = 14.285 . . . To account for this problem

I suggest using other variables besides x,y,z, or t. You may access more

variables using the tab marked VAR.

Should you decide to store using global variables you will need to clear the

value of assigned variables before attempting to use x, y ,z or t as a variable

elsewhere in the calculator. Find Clear All Variables listed under the

edit menu bar.