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Solving an Equation
When the unknown is not by itself on the left side of the equation,
use [SOLVE | . Pressing @[ soLve] 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:
B (soLvE)
G LT
Menu for selecting the
unknown variable.
{L}
T?408128
Selects L, prompts for
T.
8
G?9.8067
Stores T, prompts for
G.
L=158979
Retains
previous value
p
of G, calculates L.*
*If the HP-22S displays S@RT(NEG?> instead of the answer, there was a negative value
stored in L before you started the calculation. Clear L (press 0
L) and start again.
1: Getting Started
31
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