HP 39GS hp 39gs_user's guide_English_E_HDPMG39AE13.pdf - Page 197
In this example, the matrix you created is listed as, Enter the equation
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Matrices 2. Create the vector of the constants in the linear system. 5 7 1 3. Return to the Matrix Catalog. MATRIX In this example, the vector you created is listed as M1. 4. Create a new matrix. Select Real matrix 5. Enter the equation coefficients. 2 3 4 1 1 1 4 1 2 In this example, the matrix you created is listed as M2. 6. Return to HOME and enter the calculation to left-multiply the constants vector by the inverse of the coefficients matrix. M2 x -1 M1 The result is a vector of the solutions x = 2, y = 3 and z = -2. An alternative method, is to use the RREF function. See "RREF" on page 15-12. 15-9
Matrices
15-9
2.
Create the vector of the
constants in the linear
system.
5
7
1
3.
Return to the Matrix
Catalog.
MATRIX
In this example, the
vector you created is
listed as M1.
4.
Create a new matrix.
Select
Real matrix
5.
Enter the equation
coefficients.
2
3
4
1
1
1
4
1
2
In this example, the matrix you created is listed as
M2.
6.
Return to HOME and enter the calculation to
left-multiply the constants vector by the inverse of the
coefficients matrix.
M2
x
–1
M1
The result is a vector of the
solutions
x
= 2,
y
= 3 and
z
= –2.
An alternative method, is to use the RREF function. See
“RREF” on page 15-12.