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Subtract Products, Get Identity? (Posted on 2007-04-11) Difficulty: 3 of 5
P and Q are two 2x2 matrices and I is a 2x2 unit matrix.

Is it ever the case that PQ - QP = I?

See The Solution Submitted by K Sengupta    
Rating: 2.5000 (2 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
general caseStefan2007-04-26 04:45:01
re: Solution and a variantGamer2007-04-11 19:25:43
SolutionSolution and a variantJer2007-04-11 13:36:30
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