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Linear Solver App - HP Prime Graphing Calculator Quick Start Manual

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Linear Solver App

The Linear Solver app solves 2×2 and 3×3 systems of linear equations. To open the Linear Solver
app, press
I and select
systems and the other for 3×3 systems. By default, the 3×3 page is displayed on opening.
Enter a value for the coefficient of each linear equation and note the solution given below the
equations. The solution shown constantly changes as you add or change the coefficients of the
equations.
The menu items are:
: moves the cursor to the entry line where you can add or change a value. You can also highlight a field, enter a
value, and press
E . The cursor automatically moves to the next field, where you can enter the next value and press
E .
: displays the page for solving a system of 2 linear equations in 2 variables; changes to
: displays the page for solving a system of 3 linear equations in 3 variables; changes to
Example
Find the solution of the linear system 5x + 2y = 8 and 3x – y = 7.
Solution
Tap
to display the 2x2 page and enter the coefficients and constants of both equations, as
shown in the figure at the right. (Note: to enter a negative number, first press
As you enter values, the solution automatically updates. The solution you want appears only when
all coefficients and constants have been entered. In this example, the solution is x = 2 and y = –1.
46
.The Linear Solver app has two pages: one for 2×2
Linear Solver
Q .)
when active
when active

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