Solving Simultaneous Linear Equations In Three Unknowns - Casio fx-9860GII Instructions Manual

Choose equations in two unknowns and press
Note: This is how you will use the linear equation solver in your
examinations. In your project, you might want to solve a more complicated
system with more equations and more variables.
You will see the template on the right.
Type the coeffi cients from two equations into the
EXE
template, pressing
F1
Press and the calculator will solve the equations, giving the solutions as
X and Y.
The solutions are x = 4, y = 2.

1.5 Solving simultaneous linear equations in three unknowns

When solving simultaneous equations in three unknowns there might be a
unique solution, infi nitely many solutions or no solutions at all. Geometrically,
if the equations represent planes in three-dimensions, then their solutions
would be intersection at a point, intersection on a line (or plane) or
non-intersecting planes.
© Oxford University Press 2012: this may be reproduced for class use solely for the purchaser's institute
F1
after each number.
.
The equations must
be in the correct order.
Casio fx-9860GII
Using a graphic display calculator 5