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If AX=0, then it has only the trivial solution when?
  1. ∣A∣  =0
  2. ∣A∣=0
  3. A=0
  4. X  =0
Explanation

If the determinant , then A is non-singular (invertible), so the homogeneous system
AX=0 has only the trivial solution .

Last updated 24-07-2026 by NA

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