Question: Enter the following 3 matrices into Matlab, A = -47 36 38 30 -31 6 -42 -39 -11 41 31 -40 22 -31 -14 -49

Enter the following 3 matrices into Matlab,
A =
-47 36 38 30
-31 6 -42 -39
-11 41 31 -40
22 -31 -14 -49
-49 -42 43 -17
, B =
30 -40 -23 38
47 -9 6 -20
, C =
15 37
13 46
47 -23
-24 39
-30 46
To check that you have correctly entered these matrices into Matlab, verify that
ATCB =
-222966 66092 -10139 60206
20098 -159676 -119483 222382
24881 -22817 -10963 16166
-123009 32153 -8969 39602
, and that tr (ATCB) = -354003.

(a) Let D = CBAT. Find d15 (i.e., find the entry in row 1, column 5 of the matrix D)
(b) Let E = ABTCT. Find tr (E)
(c) Let F be the reduced row echelon form of ATCB. Find f14. (i.e., find the entry in row 1, column 4, of the reduced row echelon form of ATCB)

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