HP 15c Collector's Edition

232 Appendix D: A Detailed Look at _
Keystrokes
Display
e
−|x|/10
− 2e
x
2
e
−|x|
.
+
019- 40
3
020- 3
3 + e
−|x|/10
− 2e
x
2
e
−|x|
.
+
021- 40
| n
022- 43 32
Use _ with the following single initial estimates: 10, 1, and 10
−20
.
Keystrokes Display
| ¥ Run mode.
10 v
10.0000
Single estimate.
´ _ .0
Error 8
−
455.4335
Best x-value.
)
48,026,721.85
Previous value.
)
1.0000
Function value.
| ( | (
455.4335
Restore the stack.
´ _ .0
Error 8
−
48,026,721.85
Another x-value.
))
1.0000
Same function value
(an asymptote).
1 v
1.0000
Single estimate.
´ _ .0
Error 8
−
2.1213
Best x-value.
)
2.1471
Previous value.
)
0.3788
Function value.
| ( | (
2.1213
Restore the stack.
´ _ .0
Error 8
−
2.1213
Same x-value.
) )
0.3788
Same function value
(a minimum).
“ ” 20 v
1.0000 -20
Single estimate.
´ _ .0
Error 8
−
1.0000 -20
Best x-value.
)
1.1250 -20
Previous value.
)
2.0000
Function value.