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HP -22S Owner's Manual Page 86

Scientific calculator.
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Example: Converting Between Feet and Meters.
Part 1:
Write
an equation that converts between feet and meters.
Since:
Number of inches
=
Number of feet x 12
Number of centimeters
=
Number of meters x 100
The equation is:
IN(Mx100)=Fx12
Part
2:
Convert 22 feet to meters.
Keys:
Display:
Description:
. , EQUATIONS
1
If necessary, press
[!J
until the HP-22S displays
TYPE NEW EQN.
Type the equation* and press
'INPUT I.
Then:
. , SOLVE
1
{M}
F?value
22'INPUTI
M=6.7056
Part 3:
Convert 0.2 kilometers to feet.
. , SOLVE
1
{F}
. 201000
I
INPUT
1
M?6.7056
M=200.0000
F=656.1680
Selects M, prompts for
feet.
Calculates meters.
Selects F, prompts for
meters .
Calculates, stores M.
Calculates feet.
• The keystrokes for typing the equation are:
.1
UN
ITS
1
{L}
{+ IN} 1
STO
I
M
0
100
ED G
ISTOIF012.
86
6: Evaluating and Solving Equations

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