MATLAB: Meaning of the symbol in the equation

equation

Please can someone tell me what the ||equation||2 symbol denotes in the equation given the link…. Please do reply…. Please can anyone help me to code that line… i dont know what that symbol ||equation||2 stands for….. Please do reply what is the meaning of

||y(x,n)……||2

Please do reply…..

Best Answer

you are looking at the square of a vector norm:

|v|||^2 = sqrt( v_1^2 + v_2^2 + ... + v_n^2 ) = v_1^2 + v_2^2 + ... + v_n^2

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MATLAB: Meaning of ~isempty()

~ means NOT

so isempty tells you if the vector is empty and ~isempty tells you if the vector is not empty.

MATLAB: Meaning of unit vector

A unit vector is any vector v such that norm(v) = 1. For your case of order n=6, you want a 6 element vector v with norm(v) = 1. Some examples of 6-element unit vectors:

v = [1;0;0;0;0;0]

v = [1;1;1;1;1;1]; v = v/norm(v);

v = rand(6,1); v = v/norm(v);

Any one of these could be used as a suitable starting vector for your problem.

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MATLAB: Meaning of ~isempty()

MATLAB: Meaning of unit vector

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