HP -15C Owner's Handbook Manual page 229

Keystrokes
| ¥
7 v
14
´_ 2
))
The large stress value at the root points out that the _ routine has
found a discontinuity. This is a place on the beam where the stress quickly
changes from negative to positive. Start at the other end of the beam
(estimates of 0 and 7) and use _ again.
Keystrokes
0 v
7
´ _ 2
))
Beame's beam has zero shear stress at
approximately 3.1358 meters and an
abrupt change of stress at 10.0000 meters.
When no root is found and
one key to clear the display and observe the estimate at which the function
was closest to zero. By also reviewing the numbers in the Y- and Z-
registers, you can often determine the nature of the function near the root
estimate and use this information constructively.
Appendix D: A Detailed Look at _
Display
7.0000
14
10.0000
1,000.0000
Display
0.0000
7
3.1358
2.0000
Error 8
Run mode.
Initial estimates.
Possible root.
Stress not zero.
Initial estimates.
Possible root.
-07
Negligible stress.
is displayed, you can press − or any
229