154 12: The Equation Solver
File name : English-M02-1-040308(Print).doc Print data : 2004/3/9
Regardless of how you do this calculation (even if you do it longhand),
you are using an equation:
Next Forecast = Old Fo Change in Old Forecast
= Old Fo (Projected Percentage Changes
xOld Forecast)
or:
NEXT
=
OLD
+ ((
A
% +
B
% +
C
%)
÷
100 x
OLD
)
Using the SOLVE and ALPHAbetic menus, you can type in this equation
as
and then automatically create this menu—which contains all the
variables’ labels—by pressing
I
:
*
Each menu label represents a
variable
. You can use them to store and
calculate values the same way you use other menus and their built-in
variables.
Entering a Solver Equation.
To type this equation, you must use the
ALPHA menu. If you are not familiar with the ALPHAbetic menu, refer to
“ Typing Words and Characters ” on page 30.
Keys: Display:
Description:
Displays SOLVE menu,
then ALPHA menu.
NEXT
=
OLD
The equation is too long
*
Because the Solver uses arithmetic priority (
,
before
,
), a second set of
parentheses (before
A
% and after the second
OLD
) is not necessary. See
“Order of Calculations,” page 165.