How to write this summation function?

Hi. I need to write this summation on Matlab and I don't know how.

T_new = ∑x·Tsat

x was written as a vector:

x = linspace (0,1,10)

And Tsat:

for i=1:comp;
  Tsat(i)=(C2(i)/(C1(i)-(ln(P)))-C3(i));
end

C1, C2, C3 are constants. There are 2 components (comp). But I need to compute 10 times. At the end, I will plot my code.

Answer 1

[Image Analyst]

Where is Tsat in the formula? All I see is T_new and T. And x has 10 elements while Tsat has comp elements. If comp is not 10, then Tsat and x have different number of elements, so that means T is not in the sum, just x is. So the sum could be written as

T_new = sum(x) - T

[Felipe Gonzalez]

Sorry. There are 2 components. But I need to compute 10 times.

[Image Analyst]

I don't know what that means. sum() will sum all 10 elements of x. So now the first equation, taking your edit into account, becomes this:

T_new = sum(x) - Tsat;

I don't know why you need to do the second chunk of code (the loop) 10 times because it's no different after the 10th time than after the first time, but anyway...put it in a loop:

for k = 1 : 10  % Do the inner loop over "i" 10 times.
    for i=1:comp;
        Tsat(i)=(C2(i)/(C1(i)-(ln(P)))-C3(i));
    end
end

Again Tsat is the same after each iteration of k.