k Selecting an Equation Type

The following shows the operations you can use to select an equation type.
To select this equation type:Perform this keyEQN type menu item:
operation:

 

 

 

 

 

Simultaneous Linear EquationsN8(EQN)1aX+bY=c
with Two Unknowns

 

 

Simultaneous Linear Equations

N8(EQN)2aX+bY+cZ=d
with Three Unknowns

 

 

Simultaneous Linear Equations

N8(EQN)3aX+bY+cZ+dT=e
with Four Unknowns

 

 

Simultaneous Linear Equations

N8(EQN)4aX+bY+cZ+dT+eU=f
with Five Unknowns

 

 

Quadratic EquationN8(EQN)c1aX2+bX+c=0

 

 

 

Cubic EquationN8(EQN)c2aX3+bX2+cX+d=0

 

 

 

Note

Changing the equation type after you are already using the EQN Mode to perform a calculation will cause all values currently input on the coefficient editor screen to be cleared.

k Inputting Values for Coefficients

Use the coefficient editor for inputting values for the coefficients of an equation. The coefficient editor screen has cells that you can use to input values for each coefficient. The number of cells that appear on the coefficient editor screen depends on the equation type you selected.

AInputting and Editing Coefficient Values

Use the cursor keys to move the cursor to the cell you want and then input a value. As you input a value or expression, it appears in the lower left corner of the display.

To clear the contents of the cell where the cursor is currently located, press o.

You must press E to finalize input into the cell where the cursor is located. This will register your input and move the cursor to the next cell. Up to six digits of the input value will be displayed in the cell when you press E.

You can input a value or calculation expression into each cell. If you input a calculation expression, pressing E will execute the calculation and display only the result in the applicable cell.

To edit the contents of a cell, use the cursor keys to move the cursor to the cell and then input what you want.

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