HP 50G, User Manual

Page: 433 / 887

Page 12-50
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:
PLOTADD(X^2-X) is similar to
„ô
but adding this function to EQ: X^2 -1.
Using
@ERASE @DRAW
produces the plot: