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Simultaneous linear equations
with two, three, or four
unknowns
Press (Simul Equation), and then
use a number key ( to ) to
specify the number of unknowns.
Quadratic equations, cubic
equations, or quartic equations
Press (Polynomial), and then use
a number key ( to ) to specify
the polynomial degree.
3. Use the Coefficient Editor that appears to input coefficient values.
To solve 2x
2
+ x − 3 = 0, for example, press (Polynomial) in
step 2. Use the Coefficient Editor that appears to input
213.
Pressing will clear all of the coefficients to zero.
4. After all the values are the way you want, press .
This will display a solution. Each press of will display another
solution. Pressing while the final solution is displayed will return to
the Coefficient Editor.
A message appears to let you know when there is no solution or when
there are infinite solutions. Pressing or will return to the
Coefficient Editor.
You can assign the currently displayed solution to a variable. While
the solution is displayed, press and then the key that
corresponds to the name of the variable to which you want to assign
it.
To return to the Coefficient Editor while any solution is displayed,
press .
Note: Solutions that include are displayed only when the selected
calculation type is Polynomial.
To change the current equation type setting: Press (Simul
Equation) or (Polynomial), and then press , , or . Changing
the equation type causes the values of all Coefficient Editor coefficients to
change to zero.
Equation/Func Mode Calculation Examples
x + 2y = 3, 2x + 3y = 4
(Simul Equation)
123234
(x=)
(y=)
-1
2
x
2
+ 2x − 2 = 0
(Polynomial)
122
(x
1
=)
(x
2
=)
-1 +
3
-1 −
3
(Displays x-coordinate of local minimum of y = x
2
+ 2x − 2.*)
(x=)
-1
(Displays y-coordinate of local minimum of y = x
2
+ 2x − 2.*)
(y=)
-3
* The x- and y-coordinates of the local minimum (or local maximum) of the
function y = ax
2
+ bx + c are also displayed, but only when a quadratic
equation is selected for the calculation type.
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