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  3. a 31 20 12 30 7 49 31 49...

Question: a 31 20 12 30 7 49 31 49...

Question details
A =
-31 20 -12 30
-7 49 31 -49
-9 -12 -3 -40
-2 41 19 -34
-8 49 1 -9
,   B =
38 -6 0 -3
-26 -23 46 32
,   C =
-15 25
2 3
-11 38
-39 27
49 22
To check that you have correctly entered these matrices into Matlab, verify that
ATCB =
44536 30048 -62928 -44484
-33960 -59040 109296 73836
-21410 -2420 9844 8099
82384 42097 -93518 -67387
, and that tr (ATCB) = -72047.
(a) Let D = CBAT. Find d24 (i.e., find the entry in row 2, column 4 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).

Answer must be in MATHLAB form

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