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  3. 3 the set r22 of 2 x 2 matrices with...

Question: 3 the set r22 of 2 x 2 matrices with...

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3. The set R2*2 of 2 x 2 matrices (with coefficients in R) is a vector si ace. Let A E R2*2 and r E R. Determine whether the following are subspaces of R2x2: (a) BER* det B 0 (b) {BER2x2 . AB=BA): (c) B E R2*2 : Bx 21 c) a, b, c E R. : 0

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