Keystrokes display – HP 15c User Manual
Page 164
164
Appendix: Accuracy of Numerical Calculations
164
Disparate Results from Three Programs F
A
, F
B
, F
C
Case 1
Case 2
Case 3
p
1.
9.999999996
10.
q
1.
9.999999994
5.000000001
r
1.00005 Ч 10
-5
3 Ч 10
-9
15.
F
A
0.
0.
180.
F
B
5.73072 × 10
-4
Error 0
180.
F
C
5.72986 Ч 10
-4
1.28117 Ч 10
-8
179.9985965
Case 4
Case 5
Case 6
p
0.527864055
9.999999996
9.999999999
q
9.472135941
3 × 10
-9
9.999999999
r
9.999999996
9.999999994
20.
F
A
Error 0
48.18968509
180.
F
B
Error 0
Error 0
180.
F
C
180.
48.18968510
Error 0
Case 7
Case 8
Case 9
p
1.00002
3.162277662
3.162277662
q
1.00002
2.3 Ч 10
-9
1.5555 Ч 10
-6
r
2.00004
3.162277661
3.162277661
F
A
Error 0
90.
90.
F
B
180.
70.52877936
89.96318706
F
C
180.
64.22853822
89.96315156
To use a program, key in p v q v r, run program "A", "B", or "C", and wait to
see the program's approximation F to θ = f. Only program "C" is reliable.
Keystrokes
Display
|D
|¥
´CLEARM
000-
´bA
001-42,21,11
|x
002- 43 11
®
003- 34
|x
004- 43 11
|K
005- 43 36
|(
006- 43 33