MATLAB: How to represent binary values as polynomial expression

polynomial expression

hello ,

   i m working with cyclic codes,where i have to generate polynomial expression for the binary sequences for example
 a=[1 0 1 1]
i tried with poly2sym(a)..it worked..
my problem is when a=1011 i m getting output as 1..
similary i have to generate polynomial xepression for 16 possible bits.
plz,suggest me...

Best Answer

My suggestion:

a=1011
tmp = sprintf('%i',a);
a = str2num(sprintf('%c ',tmp(:)));
poly2sym(a)

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MATLAB: Polynomial with function handle.

You defined the nested poly() function with this signature

function polynomial = poly(ii); % single input

But then you are calling it like this

poly(x,ii-1); % two inputs

Also, the task only requires you not to use for-loop. It does not say to do it with recursion. Following is a more intuitive loop-free approach.

function fh = get_polynomial_handle(p)
    function polynomial = poly(x)
        polynomial = sum(p.*x.^(0:numel(p)-1));
    end    
    fh = @poly;
end

MATLAB: How can i use sym2polys function

It's sym2poly (without s)

Before asking in the forum, read the help

help sym2polys 
doc sym2polys

%or in the net with google for example using keywords like: (sym2polys matlab) and you find out yourself the error

Best Answer

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MATLAB: Polynomial with function handle.

MATLAB: How can i use sym2polys function

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