Formula Storage Function - Casio FX-890P Owner's Manual

4 Formula Storage Function

The formula Storage function is very useful when performing repeat calculations.
Three different keys are used when working with the formula Storage function.
IN key....... Stores presently displayed formula.
OUT key...... Displays formula stored in memory.
CALC key.... Assigns values to variables in formula, and displays formula
calculation result.
Sample Application
EXAMPLE:
Obtain the value for each of the value assigned to x when y = 3.43 cosx. (Calculate in
three decimal places.)
x
y
OPERATION:
First, specify the angle unit and number of decimal places
MENU 7  , select the DEG unit using the (  /
angle units selection menu pressing the CAL key.
Shift SET F 3 
Next, input a formula and press IN key to store it.
Y = 3 . 43 * COS X
Press the OUT key to confirm that the formula has been stored.
CLS OUT
Then, start calculating by pressing the CALC key.
CALC
8 . .
. .
15 . .
. .
8° 15°
. (Obtain in 3 decimal places by rounding off the 4
IN.
22°
..
Y=3.43*COSX_
X?_
X?8
Y= 3.397
X?8
Y= 3.397
X?_
X?8
Y= 3.397
X?15
Y=3.313
22
27°
) cursor keys. Exit the
th
decimal place.)
31°