# Linear Solver Aplet; About The Linear Solver Aplet; Getting Started With The Linear Solver Aplet - HP 40gs User Manual

Graphing calculator.

## Linear Solver aplet

### About the Linear Solver aplet

Getting started with the
Open the
Linear Solver
aplet
Choose the
equation set
Linear Solver aplet
The Linear Solver aplet allows you to solve a set of linear
equations. The set can contain two or three linear
equations.
In a two-equation set, each equation must be in the form
ax
+
by
=
k
. In a three-equation set, each equation must
ax
be in the form
You provide values for a, b, and k (and c in three-
equation sets) for each equation, and the Linear Solver
aplet will attempt to solve for x and y (and z in three-
equation sets).
The hp40gs will alert you if no solution can be found, or
if there is an infinite number of solutions.
Note that the Linear Solver aplet only has a numeric view.
Linear Solver
The following example defines a set of three equations
and then solves for the unknown variables.
1. Open the Linear Sequence aplet.
Select Linear
Solver
The Linear Equation
Solver opens.
2. If the last time you used
the Linear Solver aplet
you solved for two
equations, the two-
equation input form is
displayed (as in the
+
by
+
cz
=
k
.
8
aplet
8-1  