HP 33s User Manual
Page 335
More about Solving
D–11
)
Previous estimate is the same.
|
)
f
(x) = 0
Watch what happens when you use negative values for guesses:
Keys:
Display:
Description:
1
^ I
X
.)
Your negative guesses for the
root.
2
^ | H
.#1%2
Selects Equation mode; displays
the equation.
X
%/
)
Solves for X; displays the result.
Example:
Find the root of the equation.
0
5
.
0
0.3)]
(x
[x
=
−
+
÷
Enter the equation as an expression:
Keys:
Display:
Description:
| H
Selects Equation mode.
# L
X
q |
] L
X
3
| ` | `
5
!1%ª1%-
)22
Enters the equation.
|
/
/
Checksum and length.
Cancels Equation mode.
First attempt to find a positive root:
Keys:
Display:
Description:
0
I
X
10
_
Your positive guesses for the
root.
| H
!1%ª1%- )22 Selects Equation mode; displays
the left end of the equation.
X
%/
)
Calculates the root using
guesses 0 and 10.