HP 33S - Page 335

More about Solving
D–11
File name 33s-English-Manual-040130-Publication(Edition 2).doc Page : 388
Printed Date : 2004/1/30 Size : 13.7 x 21.2 cm
<

Previous estimate is the same.
< º Î

f (x) = 0
Watch what happens when you use negative values for guesses:
Keys: Display: Description:
1
z e
X

Your negative guesses for the
root.
2
z º d

Selects Equation mode; displays
the equation.
Û
X


Solves for X; displays the result.
Example: Find the root of the equation.
05.00.3)] (x [x =−+÷
Enter the equation as an expression:
Keys: Display: Description:
º d

Selects Equation mode.
? h
X
¯ º
y h
X
Ù Ë
3
º | º | Ã
Ë
5
Ï




Enters the equation.
º Î


Checksum and length.
Å

Cancels Equation mode.
First attempt to find a positive root:
Keys: Display: Description:
0
e
X
10


_

Your positive guesses for the
root.
º d

Selects Equation mode; displays
the left end of the equation.
Û
X


Calculates the root using
guesses 0 and 10.
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