Originally Posted by

**adashiu** Hello!

I'm new here as well as I am beginner in MatLab stuff . I've just started courses in MatLab programming on my studies. I have a problem to solve that I cannot carry out

. Please help me or give me some hints.

I have a given matrix

For delta=1,0.1,0.01,…,1e-16

I need to create loglog graph of the condition number[

**cond(A,1)**] as function of delta.

I have just made some attempts to do it, but it all crash just at the beggining.

Thank you for help, Adam

% Sorry for my english if I have made some mistakes

The following will give you two arrays one containing the condition numbers the second the corresponding deltas, all you need do now is plot them.

Code:

cn=zeros(1,17); %array to hold cond numbers
dd=zeros(1,17); %array to hold deltas
for idx=0:16;
delta=10^(-idx);
A=[1-delta,delta;1/delta,1+delta]
cn(idx+1)=cond(A,1);
dd(idx+1)=delta;
end

CB