HP 48gII - Manual (Page 433)

Page 12-52
ALGEBRA.. ‚× (the 4 key) Ch. 5
ARITHMETIC.. „Þ (the 1 key) Ch. 5
CALCULUS.. „Ö (the 4 key) Ch. 13
SOLVER.. „Î (the 7 key) Ch. 6
TRIGONOMETRIC.. ‚Ñ (the 8 key) Ch. 5
EXP&LN.. „Ð (the 8 key) Ch. 5
The SYMB/GRAPH menu
The GRAPH sub-menu within the SYMB menu includes the following functions:
DEFINE: same as the keystroke sequence
„à (the 2 key)
GROBADD: pastes two GROBs first over the second (See Chapter 22)
PLOT(function): plots a function, similar to
„ô
PLOTADD(function): adds this function to the list of functions to plot, similar to
„ô
Plot setup..: same as
„ô
SIGNTAB(function): sign table of given function showing intervals of positive
and negative variation, zero points and infinite asymptotes
TABVAL: table of values for a function
TABVAR: variation table of a function
Examples of some of these functions are provided next.
PLOT(X^2-1) is similar to „ô with EQ: X^2 -1. Using @ERASE @DRAW
produces the plot: