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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. |
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Answer» (II) `=[{:(0,-1,1),(-11,-10,-18):}]` (iii) `=[{:(-5,-2,2),(-12,0,-1):}]` |
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