Casio FX-95 User's Guide download pdf (Page 21)

E-20

Equation Calculations (EQN)

(fx-95ES PLUS only)

You can use the following procedure in the EQN Mode to solve simultaneous

linear equations with two or three unknowns, quadratic equations, and cubic

equations.

1. Press (EQN) to enter the EQN Mode.

2. On the menu that appears, select an equation type.

To select this calculation type: Press this key:

Simultaneous linear equations with two

unknowns

(a

X + b

Y = c

)

Simultaneous linear equations with

three unknowns

(a

X + b

Y + c

Z = d

)

Quadratic equation

(aX

+ bX + c = 0)

Cubic equation

(aX

+ bX

+ cX + d = 0)

3. Use the Coefficient Editor that appears to input coefficient values.

• To solve 2

+ x – 3 = 0, for example, press  in step 2, and then input

the following for the coefficients (

a = 2, b = 1, c = –3): 21

3.

• To change a coefficient value you already have input, move the cursor

to the appropriate cell, input the new value, and then press .

• Pressing  will clear all of the coefficients to zero.

Important: The following operations are not supported by the Coefficient

Editor: ;, ;(M–), B(STO). Pol, Rec, and multi-statements

also cannot be input with the Coefficient Editor.

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.

• You can scroll between the solutions using the A and D keys.

• To return to the Coefficient Editor while any solution is displayed, press

.

Note: • Even if Natural Display is selected, the solutions of simultaneous

linear equations are not displayed using any form that includes . • Values

cannot be converted to engineering notation on the solution screen.

Changing the Current Equation Type Setting

Press (EQN) and then select an equation type from the menu that

appears. Changing the equation type causes the values of all Coefficient

Editor coefficients to change to zero.

EQN Mode Calculation Examples

x + 2y = 3, 2x + 3y = 4

(EQN)(a

X + b

Y = c

)

1  2  3 

2  3  4 



(X=) –1

A (Y=) 2

MathMath

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 31 32

Comments to this Manuals

No comments

Casio FX-95 User's Guide Page 21

Comments to this Manuals

Related products and manuals for Calculators Casio FX-95