1.

If X=[{:(3,1,-1),(5,-2,-3):}]andY=[{:(2,1,-1),(7,2,4):}], find (i) X+Y (ii) 2X-3Y (iii)A matrix Z such that X+Y +Z is a zero matrix.

Answer»


ANSWER :(i)`=[{:(2,1,-2),(12,0,1):}]`
(II) `=[{:(0,-1,1),(-11,-10,-18):}]`
(iii) `=[{:(-5,-2,2),(-12,0,-1):}]`


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