HP HP-18C User Manual

Each menu label represents a user-variable created by the solver. You
can store numbers into these variables and do calculations the same
way you use other menus and their built-in variables.
Example: Entering a formula and using a custom menu. Part 1.
Use the formula on page 127 to create the custom menu shown in
figure 9-1.
Then, calculate the cost of carpet needed to cover a 9' by
12' room . The carpet costs $22.50 per square yard .
Part 2. Determine the most expensive carpet you can buy if the max-
imum amount you can pay to carpet the room is $300.
Starting from the MAIN menu:
Keys:
PPSY 0 L 0
W[I]9G]
Display:
•
COST .PP8yxLxW+9=C08T
22 .50 &m
9_
12 _
IBII
PP8Y=22,50
1~=9, 00
L=12 , 00
C08T=270,00
Description:
Displays the SOLVE
menu and bottom of the
formula list.
Formula typed into cal-
culator line.
*
Enters the formula and
displays the custom
menu .
Stores
the price per
square yard in PPSY.
Stores
the width.
Stores the length.
Calculates
the cost.
Part 2: Calculate the most you can pay per square yard to carpet the
room for $300.
300 1B11
&m
C08T=300,00
PP8Y=25 , 00
Stores $300 in COST.
Calculates
the maximum
price per square yard you
can pay .
• You mu st use the multiplication key (0) , and not the alphab etic []] k ey, to ent er the
"times' sign.
128 9: The Formula Solver

HP HP-18C Specifications

General

Brand	HP
Model	HP-18C
Category	PDA
Language	English