Using the below insights: obtain a matrix P such that if A is any matrix with 3 columns, AP is a cyclic shift of the columns of A (namely the first column of A is the second column of AP, second column of A is the third column of AP, and the third column of A becomes the first column of AP). # Let A = a-1, a-2, ..., a-n # x = x-1, x-2, ..., x-n # Ax = x-1*a-1 + x-2*a-2 + ... + x-n*a-n # [x1] [x1] # A = [x2] = [a1 a2 ... an]* [x2] = a1*x1 + a2*x2 + ... + an*xn # [...] [...] # [xn] [xn]

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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Using the below insights: obtain a matrix P such that if A is any matrix with 3 columns, AP is a cyclic shift of the columns of A (namely the first column of A is the second column of AP, second column of A is the third column of AP, and the third column of A becomes the first column of AP).

# Let A = a-1, a-2, ..., a-n
# x = x-1, x-2, ..., x-n
# Ax = x-1*a-1 + x-2*a-2 + ... + x-n*a-n
# [x1] [x1]
# A = [x2] = [a1 a2 ... an]* [x2] = a1*x1 + a2*x2 + ... + an*xn
# [...] [...]
# [xn] [xn]

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