Acelhd®@c mg (5 ok – HP 48g Graphing Calculator User Manual
Page 316
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f V A R )
After plotting, press
( C A N C E L ) ( r ^ f P L O T
) to review the PLOT forms
that generated the plot. Experiment by changing values or settings
and redrawing the plot.
23
Example 2
Step 1:
Step 2:
Plot the solution set for the following system of
inequalities:
x S y >
2,
4p < a; +
8,
2 y >
'ix —
6.
Create a single truth expression: ' x+Ti2 AND 4*VA
!-6 ‘. Store it in the variable
INEQ.
Create a list of the three inequalities with the inequality
signs converted to equal signs
(=): C ' X+Y=2 * ‘
4*Y=K+
'
2*Y=3-^K-~&
' >. Store the list in the variable
NEQL.
Step 3:
Begin the PLOT application, change the plot type to Cor
reset the plotting defaults, and choose
NEQL
for the field
(aCELHD®@c
mg (5 OK
(T)CHun:B OK
PLDTi
TVPE: Conic
E(3:
INDEP:
X
H-VIEW:-6.5
6.5
_flUTDiCflLE V-VIEH:-3.1 3.2
ENTER FUNCTIDNCi) TD PLQT___________
Step 4-'
Erase
PICT
and plot the three lines, (Note that these
equations meet the reijuirements for Conic plots.) After-
drawing use < X j Y ) to determine the region of interest for
inequalities.
® ® a or as necessary
\
/ -i-
X: H.3
Ta.a
23-16 Plot Types