this command A(:,2)=[] delete the .7 second

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
Section: Chapter Questions
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this command A(:,2)=[] delete the .7
second
vector
column
row
the command zeros(4) Returns an .8
* 4-by-4 square
zeros matrix
identity matrix
ones matrix
if A = [12 3; 4 5 6; 7 8 9], inverse of .9
A is denoted by
A(inv) O
A'
inv(A) O
Transcribed Image Text:this command A(:,2)=[] delete the .7 second vector column row the command zeros(4) Returns an .8 * 4-by-4 square zeros matrix identity matrix ones matrix if A = [12 3; 4 5 6; 7 8 9], inverse of .9 A is denoted by A(inv) O A' inv(A) O
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