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Summation issue using loop

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Ali aaa
Ali aaa on 18 Oct 2019
Closed: MATLAB Answer Bot on 20 Aug 2021
I am trying to implement this summation in matlab but i do not know how ?
thank u
  1 Comment
Robert U
Robert U on 18 Oct 2019
What have you tried so far?

Answers (2)

Ali aaa
Ali aaa on 18 Oct 2019
since n is just a number -1
for n=0:n-1
x(n+1) = ((x^2)(mN+i)

Robert U
Robert U on 20 Oct 2019
Hi Ali aaa,
in your code parts are missing. Without knowing any constraints about the variables, I suggest the following solution:
  1. Define a (local) function to solve the summation formula
  2. check input validity
  3. Try to vectorize the calculation
function [Em] = sum_mNi(x,m,N)
Em = 1/N * sum(cell2mat(arrayfun(@(ind) x.^2 .* (m*N + ind),0:N-1,'UniformOutput',false)'),1);
The solution might be wrong, depending on the input value types.
Kind regards,


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