The reciprocal matrix of bmatrix 1&0&2 0&1&-1 1&2&1 bmatrix is

JEE Advanced Mathematics question

The reciprocal matrix of is

Answer: (D)

"Reciprocal matrix" means the inverse. Let be the given matrix.

Cofactors : - - - $=+(0-2)=-2,

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Question ID VK-108372