alleryMatch pure diag: 1. Diag: p. Off-diag 0 2. Unit: q. Diag 1s 3. Main: r. i equals j
A1-p, 2-q, 3-r
B1-p, 2-r, 3-q
C1-q, 2-p, 3-r
D1-r, 2-p, 3-q
Answer & Solution
Correct answer: A. 1-p, 2-q, 3-r
A diagonal matrix has all non-diagonal entries equal to zero, with non-zero values restricted to positions where row equals column.
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