Question

In an identity matrix the diagonal components are
1- 1
2- 0
3-both A and B
4- none of the above​

Answer 1

Answer:

3

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Answer 2

Answer:

An identity matrix of any size, or any multiple of it (a scalar matrix), is a diagonal matrix. A diagonal matrix is sometimes called a scaling matrix, since matrix multiplication with it results in changing scale (size). Its determinant is the product of its diagonal values.