6. Let A is a n-by-n upper triangular matrix with elements $a_{ij} = \begin{cases} -1 & i < j \\ 1 & i = j \\ 0 & i > j \end{cases}$ Show how to generate this matrix in MATLAB with eye, ones, and triu. Show that $\kappa_1(A) = n2^{n-1}$.
Added by James H.
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We can use the `ones` function for this: `all_ones = ones(n);` Show more…
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