%10-37  tictocʹþ
%Enterȷϡ
>> for n = 1:100
    A = rand(n,n);
    b = rand(n,1);
    tic
    x = A\b;
    t(n) = toc;
end
>> plot(t)
>> t=toc
t =
          3.44                     кʱ3.44
>>  
