EQN Mode Calculation Examples

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

 

 

(EQN)(anX + bnY = cn)

 

 

Math

 

1 2 3 

 

 

2 3 4 

 

 

 

 

 



(X=)

–1

A

(Y=)

2

 

 

 

x – y + z = 2, x + y – z = 0, –x+ y + z = 4 (EQN)(anX + bnY + cnZ = dn)

1  1 1 2  Math 1 1  1 0 

1 1 1 4 

(X=) 1

 

 

A

(Y=)

2

 

 

A

(Z=)

3

 

 

 

 

 

 

 

 

x2 + x +

3

= 0 

 

 

 

 

 

4

 

 

 

 

 

 

(EQN)(aX2 + bX + c = 0)

1

+

'2

 

 

 

1 1 3 4  (X1=) –

i

 

 

2

2

 

 

A (X2=) –

 

1

–

'2

i

 

 

 

2

2

x2 – 2'2 x + 2 = 0 

 

 

 

 

(EQN)(aX2 + bX + c = 0)

 

 

 

 

1  2 2 2 

 

(X=) '2

 

 

 

 

 

 

 

 

x3 – 2x2 – x + 2 = 0

 

 

(EQN)(aX3 + bX2 + cX + d = 0)

 

 

1  2  1 2 

(X1=) –1

A

(X2=)

2

A

(X3=)

1

 

 

 

Matrix Calculations (MATRIX)

Use the MATRIX Mode to perform calculations involving matrices of up to 3 rows by 3 columns. To perform a matrix calculation, you first assign data to special matrix variables (MatA, MatB, MatC), and then use the variables in the calculation as shown in the example below.

1 To assign 2

1

to MatA and

 

2 –1to MatB, and then perform

 

 

 

1

1

 

–1

2

 

 

 

 

 

 

 

the following calculations: 2

1

⋅

2 –1(MatA×MatB),

 

 

 

 

 

1

1

 

–1

2

2

1 +

2 –1

(MatA+MatB)

 

 

 

 

1

1

–1

2

 

 

 

 

 

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