HP 33s scientific calculator 用户手册
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
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.
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.
displays the left end of the
equation.
Û
X
No root found for f(x).
Å
Clears error message; cancels
Equation mode.
Equation mode.
º
È
X
Displays the final estimate of
x.
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: