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Question
A diagonal matrix is said to be a scalar matrix if its diagonal elements are
Options
equal
zero
half
one
MCQ
Solution
equal
Explanation:
A diagonal matrix is said to be scalar matrix 1 if its diagonal elements are equal, that is a square matrix B = [bij] n × n is said to be scalar matrix if bij = 0, when i ≠ j.
bij = k, When i = j, for some constant k.
For example, A = [3], B = `[(-1, 0),(0, 1)]` are scalar matrics of order 1, 2 respectively.
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