Consider the n × n matrix M n , with n ≥ 2 , that containsall integers 1, 2, 3, . . ., n 2 as its entries, written in sequence, column by column; for example, M 4 = [ 1 5 9 13 2 6 10 14 3 7 11 15 4 8 12 16 ] . a. Determine the rank of M 4 . b. Determine the rank of M n . c. For which nis M n , invertible?
Consider the n × n matrix M n , with n ≥ 2 , that containsall integers 1, 2, 3, . . ., n 2 as its entries, written in sequence, column by column; for example, M 4 = [ 1 5 9 13 2 6 10 14 3 7 11 15 4 8 12 16 ] . a. Determine the rank of M 4 . b. Determine the rank of M n . c. For which nis M n , invertible?
Solution Summary: The author calculates the rank of M_4 using Gauss-Jordan elimination.
Consider the
n
×
n
matrix
M
n
, with
n
≥
2
, that containsall integers 1, 2, 3, . . .,
n
2
as its entries, written in sequence, column by column; for example,
M
4
=
[
1
5
9
13
2
6
10
14
3
7
11
15
4
8
12
16
]
. a. Determine the rank of
M
4
. b. Determine the rank of
M
n
. c. For which nis
M
n
, invertible?
I want to learn this topic l dont know anything about it
Solve the linear system of equations attached using Gaussian elimination (not Gauss-Jordan) and back subsitution.
Remember that:
A matrix is in row echelon form if
Any row that consists only of zeros is at the bottom of the matrix.
The first non-zero entry in each other row is 1. This entry is called aleading 1.
The leading 1 of each row, after the first row, lies to the right of the leading 1 of the previous row.
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, algebra and related others by exploring similar questions and additional content below.
RELATIONS-DOMAIN, RANGE AND CO-DOMAIN (RELATIONS AND FUNCTIONS CBSE/ ISC MATHS); Author: Neha Agrawal Mathematically Inclined;https://www.youtube.com/watch?v=u4IQh46VoU4;License: Standard YouTube License, CC-BY