HP 40gs User Manual page 180

hp40g+.book Page 26 Friday, December 9, 2005 1:03 AM
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3. Use the arrow keys to navigate through the options.
4. To see the symbol and value of a selected constant,
press . (Click
window that appears.)
The following example shows the information
available about the speed of light (one of the physics
constants).
5. To use the selected constant in a calculation, press
. The constant appears at the position of the
cursor on the edit line.
Example
Suppose you want to know the potential energy of a mass
of 5 units according to the equation
1. Enter 5
2. Press and then press
to close the information
2
E = mc
.
.
Using mathematical functions