1

I'm new with Octave and I need to plot this function:

```
% Computes the value of the Powell Sum benchmark function.
% SCORES = POWELLSUMFCN(X) computes the value of the Powell Sum function at
% point X. POWELLSUMFCN accepts a matrix of size M-by-N and returns a vetor
% SCORES of size M-by-1 in which each row contains the
% function value for the corresponding row of X.
%
% Author: Mazhar Ansari Ardeh
% Please forward any comments or bug reports to mazhar.ansari.ardeh at
% Google's e-mail service or feel free to kindly modify the repository.
function scores = powellsumfcn(x)
n = size(x, 2);
absx = abs(x);
scores = 0;
for i = 1:n
scores = scores + (absx(:, i) .^ (i + 1));
end
end
```

I have copied from BenchmarkFcns.

I have no idea about how to plot it.

Do I need to pass all the possible values to the function plot it?