HP 33S Owner's Manual

Solving Equations
7–9
File name 33s-E-Manual-1008-Publication(1st).doc Page : 386
Printed Date : 2003/10/8 Size : 13.7 x 21.2 cm
Type in the equation:
Keys: Display: Description:
º d
h
V
º ¢


Selects Equation mode
and starts the
equation.
º y
40
Ã
h
H
º |


¸ º y
20
à h
H
º |


¸
4
¸ h
H

Ï

Terminates and
displays the equation.
º Î


Checksum and length.
It seems reasonable that either a tall, narrow box or a short, flat box could be
formed having the desired volume. Because the taller box is preferred, larger
initial estimates of the height are reasonable. However, heights greater than 20
cm are not physically possible because the metal sheet is only 40 cm wide. Initial
estimates of 10 and 20 cm are therefore appropriate.
Keys: Display: Description:
Å

Leaves Equation mode.
10
e
H
20


_

Stores lower and upper limit
guesses.
º d

Displays current equation.
Û
H

value

Solves for H; prompts for V.
7500
¥


Stores 7500 in V; solves for H.
Now check the quality of this solution — that is, whether it returned an exact
root — by looking at the value of the previous estimate of the root (in the Y–register)
and the value of the equation at the root (in the Z–register).

HP 33S Specifications

General

Type	Scientific
Form factor	Pocket
Product color	Silver
Digits	10 digits
Display number of lines	2 lines
Keyboard type	Alphanumeric
Menus and prompts	Yes

Weight and Dimensions

Dimensions (WxDxH)	157 x 16 x 81 mm