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A square matrix A=[a(ij)] in which a(ij)...

A square matrix `A=[a_(ij)]` in which `a_(ij)=0` for ` i!=j` and `[a]_(ij)=k` (constant) for `i=j` is called a

A

unit matrix

B

scalar matrix

C

null matrix

D

diagonal matrix

Text Solution

Verified by Experts

The correct Answer is:
B
in square matrix ,
Number of rows = number of columns
`therefore m=n`
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