how to represent the mathematical parameter in matlab?

Here,

    how to write the summation and its limits in matlab.

Answer 1

[Wayne King]

Is this a question about a symbolic computation, or a numerical one?

   x = randn(100,1);
   % sum of x for elements 10 to 30
   sum(x(20:30))

Symbolic

syms k
% sum of k from k =1 to k= 10
symsum(k,1,10)

[Dhines]

thanks for your kindful suggestion