HP 40gs hp 40gs_user's guide_English_E_HDPMSG40E07A.pdf - Page 323
Return to HOME and enter the calculation
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hp40g+.book Page 9 Friday, December 9, 2005 1:03 AM 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 18-12. Matrices 18-9
Matrices
18-9
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 18-12.
hp40g+.book
Page 9
Friday, December 9, 2005
1:03 AM