Question & Answer: 12575 1 46250 1 55138 1 1 83016…..

12575 1 46250 1 55138 1 1 83016Need help on the second part ( and then find the entry on the second row, thrid colunm of Et E.) Matlab

12575 1 46250 1 55138 1 1 83016

Expert Answer

 

Given below is answer for (i)

B = [-8 15 4 -11;
3 5 6 -2;
0 -1 12 5;
1 13 -15 7;
6 -8 0 -5]
Z = zeros(3,4)
E = [B;Z]
M = Transpose(E)*E %Assigne product of E transpose and E to M
disp( M(2,3)) %get 2nd row , 3rd col of M

output

B =

   -8   15    4  -11
    3    5    6   -2
    0   -1   12    5
    1   13  -15    7
    6   -8    0   -5

Z =

   0   0   0   0
   0   0   0   0
   0   0   0   0

E =

   -8   15    4  -11
    3    5    6   -2
    0   -1   12    5
    1   13  -15    7
    6   -8    0   -5
    0    0    0    0
    0    0    0    0
    0    0    0    0

M =

   110  -140   -29    59
  -140   484  -117   -49
   -29  -117   421  -101
    59   -49  -101   224

-117

Answer is -117 for the given matrix (2nd row 3col of E trans * E)

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