Section 13: Finding the Roots of an Equation 185
Keystrokes Display
”
005- 16
−t / 20.
'
006- 12
”
007- 16
−e
−t / 20
.
1 008- 1
+
009- 40
1 − e
−t / 20
.
5 010- 5
0
011- 0
0 012- 0
0
013- 0
*
014- 20
5000(1 − e
−t / 20
).
®
015- 34
Brings another t-value
into X-register.
2
016- 2
0 017- 0
0
018- 0
*
019- 20
200t.
-
020- 30
5000(1 − e
−t / 20
) − 200t.
| n
021- 43 32
Switch to Run mode, key in two initial estimates of the time (for example,
5 and 6 seconds) and execute _.
Keystrokes Display
| ¥
Run mode.
5 v
5.0000
Initial estimates.
6
6
´ _ A
9.2843
The desired root.
Verify the root by reviewing the Y- and Z-registers.
Keystrokes Display
)
9.2843
A previous estimate of the
root.
)
0.0000
Value of the function at the
root showing that h = 0.
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