How can i implement following sum notation ?

I tried to write the code but it is wrong. How can i fix it? Thanks.

Answer 1

[Bruno Luong]

call (without y=...)

soru(2,4)

Your function is not supposed to return any output

[cagri sarac]

it does not work

[Bruno Luong]

"it does not work"

Your function still have problem it doesn't compute what you expect (I'm not here to do entirely the homework for you) but it certainly not longer throw an error:

function soru(x,n)
sum = 0;
k = 1;
prompt1="enter x ";
prompt2="enter n ";
x=input(prompt1);
n=input(prompt2);
for loop=k:n
    sum=((3/x)^k)+sum;
end
disp(sum)
end

Result runing on my PC

>> soru(2,4)
enter x 1
enter n 10
30

>> 

Answer 2

[Matt J]

function y=soru(x,n)
  y=sum(     (3./x).^(1:n)  );
end