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Solving An Equation - HP -22S Owner's Manual

Scientific calculator.
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Solving an Equation
When the unknown is not by itself on the left side of the equation,
use'
SOLVE I.
Pressing .,
SOLVE
1
displays a menu of the equation's
variables. Use the menu to select the unknown.
Example: Length of a Pendulum. What length must a pendulum
be to have a period of 8 seconds?
Keys:
Display:
Description:
.'SOLVEI
G L T
Menu for selecting the
unknown variable.
{L}
T?4.13128
Selects L, prompts for
T.
a I
INPUT
I
G?9.81367
Stores
T,
prompts for
G.
I
INPUT
1
L=15.8979
Retains previous value
of G, calculates L.·
• If the HP-22S displays SQRT
(NEG)
instead of the answer, there was a negative value
stored in L before you started the calculation. Clear L (press 0
I
8TO
I
L) and start again.
1: Getting Started
31

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