(4 marks)Let A = (aij ) be the 4 × 4 matrix and D = (dij ) be the 4 × 1 matrix shown below.A =−3 1 1 01 1 2 −20 1 1 21 1 2 1 D =−1101(a) Evaluate4∑j=1a4j a2j

matrix A=[1 0,2 4, -1 2], d is a scalar which is d=2. calculate A-d

The matrix BA is:a.First row [0 7 -7], second row [1 4 7] and third row [2 -1 3]b.First row [-1 7 7], second row [10 17 8] and third row [2 -3 3]c.First row [-7 24 9], second row [-1 33 21] and third row [2 -18 -7]d.First row [-5 26 5], second row [-1 3 2] and third row [0 -18 -5]

The matrix A transpose is:a.First row [-1 3 2], second row [0 4 1] and third row [1 2 5]b.First row [1 0 1], second row [0 1 0] and third row [0 0 1]c.First row [1 0 1], second row [0 -3 5] and third row [2 4 -5]d.First row [-1 0 1], second row [3 4 2] and third row [2 1

Youin normal form of a 4-4 matrix can i do like this first make A11=1 then make all elements of the first row except a11=0 likewise then make all elements of first column except A11 0 then i make A22=1 then all other elements i.e A32 and A42=0 then make A33=1 then make A43 and A23=0 then make A44=1 if possible and at the end make A34 and A24 =0

The matrix AB is:a.First row [0 7 -7], second row [1 4 7] and third row [2 -1 3]b.First row [-1 7 7], second row [10 17 8] and third row [2 -3 3]c.First row [-1 0 1], second row [0 1 -8] and third row [-4 -3 3]d.First row [4 0 1], second row [1 1 8] and third row [2 -3 3]