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Problem :

+ [0] = ?    

   

Problem :

= ?    

   

Problem : If

=    

what is (x, y, z)

(x, y, z) = (- 2, - 8, 7)

Problem : If AI = A, and A is a 4×6 matrix, what are the dimensions of I?

6×6

Problem : If IA = A, and A is a 4×6 matrix, what are the dimensions of I?

4×4

Problem : Is there a matrix B such that BB = B?

Yes, B = I.
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