Getting Started with Matlab: Summing 2n from 0 to n

[phillyj]

Hi, I'm new to matlab.

I'm trying to sum a function similar to 2ⁿ from 0 to n where n is specified as a digit and not a list. I am using the sum() function but I don't really know how to get it to work right for this.

Thanks

 

[trambolin]

S=0;
n = 10;
for k=0:n;
S = S + 2^k;
end

Or

ind = 0:1:n;
S = sum(2.^ind);

 

[phillyj]

Thanks but I got it. I needed a one-line code like this:

n = 25
sum(2.^(0:n))