NEWBIE function with sum of multiple parameters

[grizos]

I am very new to Matlab and such programms generally. I want to implement such a function:

y = sum(Xi) where i = 1 to 20
Xi are unknown parameters. how can I do this to Matlab?

Of course i can do: y= x1 + x2 + x3... but it's ridiculous.

My final target is to minimize such a function with genetical algorithms. Of course this is not the real function. It's simply demonstrates what I need to learn. Thank you all

 

[denno1]

I'm not sure that I totally understand your issue. It seems that you have the answer in your question, which is why I say this. If you have an array i defined as "i = [1,2,3,4,5,6,7,8,9,10]" and you use the function "y = sum(i)", Matlab will provide you the answer y = 55. In other words, the function already exists. Perhaps I'm not interpreting your question correctly.

 

[grizos]

Well I found a solution. Sorry for not syntaxing my question right. With the solution you will understand my question too

r = func(x)

r=0;

for i=0:20
r= r+ sum(x(i));
end

so func is a function with 20 unknown variables x(1) ... x(20)