Question 1196460

B={{{matrix(3,3,1, -1, 0,-3 ,-2, 2,-7, -6 ,0)}}}

 The main diagonal is any entry where row equals column, so the principal diagonal of matrix B is

B={{{matrix(3,3,highlight(1), -1, 0,-3 ,highlight(-2), 2,-7, -6 ,highlight(0))}}}


the elements on the principal diagonal of matrix B are: {{{highlight(1)}}},{{{highlight(-2)}}},{{{highlight(0)}}}