Question
If A = [1] , then A is:
  1. Zero matrix
  2. SIngular matrix
  3. Non - singular matrix
  4. Data insufficient

Answer

  1. Non - singular matrix

Solution:

$\text{A} = \big[1\big] $ is an identity matrix with order $1\times1.|\text{A}|\neq0$

So A is nonsingular.

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