Question

If ∣∣ ∣∣1114a3b2cabc∣∣ ∣∣=0;a,b,c∉{0,1}, then a,b,c are in ?​

Answer 1

Answer:

Given A=⎣⎢⎢⎡a000b000c⎦⎥⎥⎤,

We know that A−1=∣A∣adjA

⟹adjA=⎣⎢⎢⎡bc000ac000ab⎦⎥⎥⎤T=⎣⎢⎢⎡bc000ac000ab⎦⎥⎥⎤ and ∣A∣=abc

⟹A−1=⎣⎢⎢⎡a−1000b−1000c

Answer 2

Answer:

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