ionA = (3./(2*pi*k).^2).*(exp(-1i*2*pi*k/3).*(1i*2*pi*k/3 + 1) - 1); EquationB

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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I hope this is enough information. On matlab I have these three lines of code

EquationA = (3./(2*pi*k).^2).*(exp(-1i*2*pi*k/3).*(1i*2*pi*k/3 + 1) - 1);

EquationB = (3./(2*pi*k).^2).*(exp(1i*2*pi*k/3).*(-1i*2*pi*k/3 + 1) - 1);

EQ = [flip(EquationB) 1/6 EquationA];

Can you explain what the third line is exactly doing? Is EQ a vector now? And why is the equation flipped?

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