MATLAB: How do i calculate summations using a loop structure

loopsummation

Hi guys, I'm having trouble trying to put this summation: top of ∑ is N bottom of ∑ is j=1 side of ∑ is j^p For p=1,2,3 and N=6 how do i solve this using matlab? i keep getting error messages.

Best Answer

sum((1:6).^p) 
use various values of p and you get the result.

Related Solutions

MATLAB: Counting how many times a loop loops.

Check the code below.

% Input Varibles
  g = input('guess how many times');
% Calculate Running Sum.
loopcnt = 0;
sum = 0;
    while(sum <=21)
        n = randi ([1, 11]);
        sum = sum + n;
        loopcnt = loopcnt + 1;
    end
        disp (sum);
        disp(['number of loops: ' num2str(loopcnt)]);

MATLAB: Calculate summation using loop

To make it easier for yourself, the first thing you should do is create a function for the summation. It takes two variables (N and p) and returns the result of the summation, like so:

function s = powersum(N, p)
  sum = 0;
  for j = 1:N
    %I'll leave you to fill this in, you've already done that in your script
  end
end

You can then use that function in your script for whichever value of N and p you wish:

N = 6;
for p = 1:3
  s = powersum(N, p);
  %do whatever you want with the result
end

Note that powersum can be implemented more efficiently without a loop but as it looks like you are a beginner in matlab, I'll leave it at that.

Best Answer

Related Solutions

MATLAB: Counting how many times a loop loops.

MATLAB: Calculate summation using loop

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