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IF A=[{:(1,0),(0,-1):}],B=[{:(0,-1),(1,0...

IF `A=[{:(1,0),(0,-1):}],B=[{:(0,-1),(1,0):}]and C=[{:(0,1),(1,0):}]` and 1 is the unit matrix of order 2. then show that AB=-BA=-C

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The correct Answer is:
(i) -I, (ii) -C
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