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Example: Find the root of f(x) = x®*— x — 1 = 0 using an initial
guess of x, = 2.
Keys:
(\) (PRGM] (]
(LoAD] A
() (4]
[(sTo]0
(=] (sHow]
(=] (PRGM]
2 [xEQ] A
Remarks:
Display:
root
00-
62- 61 41 F
63- 21 0
64- 14
65- 6
66- 65
67- 22 0
68- 65
69- 1
70- 74
46b5
1.1347
Description:
Loads program.
Displays label for be-
ginning of f(x) routine.
Starts f(x) routine;
saves X.
x° — x
x6 —x — 1.
Checksum (page 66).
Exits Program mode.
Enters x; and calcu-
lates root.
After the program has finished, the value of x such that f(x) = 0 is
displayed and stored in Rg4. To calculate the corresponding value of
f(x), press
F with x in the display.
Error - Func is displayed if the equation for finding x;,; divides by
zero or causes some other improper math operation. Try a new guess
that is closer to the root. If ¢ or Ax limit needs to be increased, refer to
program instruction steps 6 and 7.
90
7: Built-in Program Library
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