HP 38g Graphing Calculator - Manual (Page 68)

Symbolic View
Keys
Key Meanine
{{EDIT}} Copies the highlighted expression to the edit
line for editing. Press
{{OK}} when done.
{{^CHK}} Checks/unchecks the current expression (or
set of expressions). Only the checked
expression(s) are evaluated in the Plot and
Numeric views.
{{X}}, {{T}},
{{0}}. {{N}}
Typing aids for the independent variable. Or,
you can use the
| xt 6 | key on the keyboard.
{{U1}}...{{U9}}
{{uo}}
{{(N-1)}}
{{(N-2)}}
Additional typing aids for variables in the
Sequence aplet.
{{SHOW}} Displays the current expression in standard
mathematical form.
{{EVAL}} Symbolically evaluates the variables of the
current expression.
1 VAR|
1 MATH 1
Menus for entering variable names, contents
of variables, or math operations.
■ {CHARS} Displays special characters. To type one,
place the cursor on it and press {{ ok }}.
[M] Deletes the highlighted expression or the
current character in the edit line.
■ {CLEAR] Deletes all expressions in the list
or
clears the
edit line (if it was in use).
Angle Measure For the Function, Parametric, Polar, and Sequence aplets, the
Setup only setting for the Symbolic view is the angle measure. This
is significant only if any trigonometric function is used.
To check or change the angle measure, press ■ [SETUP-
SYMB]. The choices are Radians, Degrees, and Grads.
This
setting can affect what the graph looks like, as well as what
the numerical values are.
3-4 Plotting and Exploring Functions