2. We wish to solve the for the unknowns x, y, and z in the following system of linear equations: 2х — Зу — 5z — 1 -3x + 4y – 2z = 2 -5x – 2y + 3z = 3 2.1. Write this system of equations as a matrix equation: [Equation 9] [Equation 10] To write this matrix equations in a more compact notation, let A denote the 3 by 3 matrix of coefficients, let x denote the 3 by 1 matrix (vector) of unknown variables, and let b denote the 3 by 1 matrix (vector) of constants.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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7. In step 2, you solved for the unknowns x, y, and z in Eq. 9. After entering matrices A
and b, you calculated the inverse matrix A-1. Then, you multiplied A- and b to find
the unknowns. Can you make this process more efficient by using a single “nested"
Excel command? Write this command exactly as you would type it into Excel:
|
Transcribed Image Text:7. In step 2, you solved for the unknowns x, y, and z in Eq. 9. After entering matrices A and b, you calculated the inverse matrix A-1. Then, you multiplied A- and b to find the unknowns. Can you make this process more efficient by using a single “nested" Excel command? Write this command exactly as you would type it into Excel: |
2. We wish to solve the for the unknowns x, y, and z in the following system of linear
equations:
2х — Зу — 5z — 1
-3x + 4y – 2z = 2
-5x – 2y + 3z = 3
2.1. Write this system of equations as a matrix equation:
[Equation 9]
[Equation 10]
To write this matrix equations in a more compact notation, let A denote the 3 by
3 matrix of coefficients, let x denote the 3 by 1 matrix (vector) of unknown
variables, and let b denote the 3 by 1 matrix (vector) of constants.
Transcribed Image Text:2. We wish to solve the for the unknowns x, y, and z in the following system of linear equations: 2х — Зу — 5z — 1 -3x + 4y – 2z = 2 -5x – 2y + 3z = 3 2.1. Write this system of equations as a matrix equation: [Equation 9] [Equation 10] To write this matrix equations in a more compact notation, let A denote the 3 by 3 matrix of coefficients, let x denote the 3 by 1 matrix (vector) of unknown variables, and let b denote the 3 by 1 matrix (vector) of constants.
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