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EQN Mode Calculation Examples
x + 2y = 3, 2x + 3y = 4
(EQN)(a
n
X + b
n
Y = c
n
)
1
2 3
2
3 4
(X=) –1
A (Y=) 2
x – y + z = 2, x + y – z = 0, –x + y + z = 4
(EQN)(a
n
X + b
n
Y + c
n
Z = d
n
)
1
1 1 2
1
1 1 0
1 1 1 4
(X=) 1
A (Y=) 2
A (Z=) 3
x
2
+ x +
4
3
= 0
(EQN)(aX
2
+ bX + c = 0)
1
1 3 4
(X
1
=)
1
2
+
–
'
2
2
i
A (X
2
=)
1
2
–
–
'
2
2
i
x
2
–
2
'
2
x + 2 = 0
(EQN)(aX
2
+ bX + c = 0)
1
2 2 2
(X=)
'
2
x
3
– 2x
2
– x + 2 = 0
(EQN)(aX
3
+ bX
2
+ cX + d = 0)
1
2 1 2
(X
1
=) –1
A (X
2
=) 2
A (X
3
=) 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.
To assign
2 1
1 1
to MatA and
2 –1
–1 2
to MatB, and then perform
the following calculations:
×
2 1
1 1
2 –1
–1 2
(MatA×MatB),
+
2 1
1 1
2 –1
–1 2
(MatA+MatB)
MathMath
MathMath
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