D–12 More about Solving
File name 33s-English-Manual-040130-Publication(Edition 2).doc Page : 388
Printed Date : 2004/1/30 Size : 13.7 x 21.2 cm
Now attempt to find a negative root by entering guesses 0 and –10. Notice that
the function is undefined for values of
x between 0 and –0.3 since those values
produce a positive denominator but a negative numerator, causing a negative
square root.
Keys: Display: Description:
0
e
X
10
z
_
º
d
Selects Equation mode;
displays the left end of the
equation.
Û
X
No root found for f(x).
Å
Clears error messa
e; cancels
Equation mode.
º
È
X
Displays the final estimate of
x.
Example: A Local "Flat" Region.
Find the root of the function
f(x) = x + 2 if x
<
–1,
f(x) = 1 for –1
≤
x
≤
1 (a local flat region),
f(x) = –x + 2 if x
>
1.
In RPN mode, enter the function as the program:
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