Please write a script for summation of 1/k

[KSSV]

What is your attempt for the simple home work?

[Deleena Rebello]

N=...;

sum = 0.0;

for k=1:N

sum = sum+1/k;

end

Iam new in this . So need a complete script please.

This is the question

Answer 1

[DGM]

I don't see why the code you wrote wouldn't work.

N = 100;

s = 0; % using sum as a name shadows the function sum()
for k = 1:N
    s = s + 1/k;
end
s

s = 5.1874

That works, but you can always do it without the loop.

s = sum(1./(1:N))

s = 5.1874

[Rik]

I suspect that is the source of the issue: using sum as a variable name will block it's use as a function.

[Deleena Rebello]

It is showing an error

Undefined function or method 'summation' for input arguments of type 'char'.

(summation is my file name) This is the error

[DGM]

Attach your file and an example of how you're calling it.

Answer 2

[Image Analyst]

Is summation.m a function or a script? If it's what you posted already, it's a script and should not give any error about inputs since there are no inputs. And it should work, once you rename sum to x, as DGM showed in his answer, which ran it in MATLAB online.

On the other hand, if it's a function the first line will be

function summation(N)

and maybe you're supposed to call it passing in N and maybe all you did was click the green run triangle without assigning N. Again, attach your m-file. Use the paperclip icon.

[Deleena Rebello]

N=input('N=');

s=0.0;

for k=1:N

s=s+1/k;

end

this Mfile works

[Deleena Rebello]

Thank you all