summation of numbers

I have uploaded an file ,plz tell how to implement that formula

http://www.sendspace.com/file/scymbl

Answer 1

[Walter Roberson]

Generally speaking, summation can be done through three standard methods:

• initializing the result to 0, and looping over all of the possibilities, adding each term to the result
• using sum()
• using symsum() if you have access to the symbolic toolbox. This should be used only for formula and not for specific numeric values.

[FIR]

walter can u plz code for me using first method of urs,plz am struck here nearly 15 days

[Walter Roberson]

The formula for qir did not come out in what I was able to read.

If qir was a matrix q(i,r) then I would code as

yt = M * ceil(sum(q(:).^2) ./ (Miplus * Mplusr) - 1) ./ log(n);

[FIR]

qir is the

number of samples with class i (i = 1,2,. . . ,S, and r = 1,2,. . . ,n)

[Walter Roberson]

So that would appear to be external information representable as an array. In that case the above code should work.