Linear Algebra Matrices

[RJJJ]

3. Consider the following matrices:

A = [ 0 −2  3 ]
    [ 2  1  1 ]

B = [ 1  0 −2 ]
    [ 1  3 −1 ]

C = [ 3 −1  3 ]
    [ 2 −1  3 ]
    [ 3  1 −1 ]

D = [ 3 -2 ]
    [−1  4 ]

E = [ 2 −4  0 ]
    [ 0  1  4 ]
    [ 3  0  1 ]

If possible, compute the following
a. ?(2?) and 2(??)
b. ?? + ?
c. (? + ?) ?^? and C ^?? + ? ^??
d. ?? + ? ^2 , where ? ^2 = ??

 

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I've fixed your matrices, RJJJ. Use code tags for aligning columns (this forum removes repeated spaces, as explained in Read Before Posting).

Please show us your beginning efforts, or ask specific questions about the parts you don't understand. Thank you!

?

 

[Steven G]

If A is an m×n matrix and B is an r×s matrix, then AB is defined if and only if n=r.

If n=r, then AB will be an m×s matrix.