HP 48G Series User Manual

Lesson 17: Solving for a Variable—Numerically
If you want a numeric solution for an unknown in an equation, you
can use the root-finding application (HP Solve). You can solve for a
value of any variable without changing the equation—as long as you
fill in values for all other variables in the expression or equation.
You can solve an equation or expression over and over—for different
known values, and for different combinations of known and unknown
variables.
Example: Solve the following expression for z:
6 4 2
2-90 61a _a? B46
This expression was created by the TEACH command
earlier and stored as the variable, RATFUNC in the
EQNS directory.
Step 1: Begin the SOLVE application and choose Zils
ove) | EEE SILVE EQUATION 38
ENTER FUMCTION TO *OLVE
E0IT [CHOO=[ [wks] | |
Step 2: The Ei: field is highlighted already, so choose RATFUNC
to be the current equation. You will need to switch to the
EQNS directory first.
Hons
FOEeo
ENTER FUMCTION TO SOLVE
EDIT [Hoos] [uweks| [EWPR=
5-2 Solving Equations

HP 48G Series Specifications

General

Model	HP 48G Series
Type	Graphing Calculator
Display Type	LCD
Display Size	131x64 pixels
Programming Language	RPL (Reverse Polish Lisp)
Memory	32 KB RAM
Processor	Saturn
Power Supply	3x AAA batteries
Connectivity	Infrared (IR)