Solving an Equation
When the unknown is not by itself on the left side of the equation,
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?
G L T
Menu for selecting the
Selects L, prompts for
Retains previous value
of G, calculates L.·
• If the HP-22S displays SQRT
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