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Introduction to
and
lets you evaluate an algebraic expression, or evaluate an equa-
tion for a variable that appears by itself on the left side of the
equation.
lets you solve an equation for any variable.
Writing and Entering an Equation
The equation for calculating the period of a simple pendulum (a pen-
dulum made from a very small object suspended by a very light
string) is:
T==2W\/l—
g
where
T =
the period of the pendulum.
| =
the length of the string.
g =
the acceleration of gravity, 9.80665 meters/sec?.
The equation must be written in a form the HP-22S can interpret:
Equation functions
T=2XaXSART(L+GD
The following keystrokes enter the equation:
Keys:
Display:
Description:
B (EQUATIONS]
TYPE NEW EQN
If the list of equations
already contains equa-
tions, press (V] until
the HP-22S displays
this message.
T
T
Use
or
to
type a letter.
1: Getting Started
29
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