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ConceptMatrices - Inverse of a Matrix Existance

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#### Question

The inverse of the matrix `[[2,0,0],[0,1,0],[0,0,-1]]`is --------

(a) `[[1/2,0,0],[0,1,0],[0,0,-1]]`

(b) `[[-1/2,0,0],[0,-1,0],[0,0,1]]`

(c) `[[-1,0,0],[0,-1/2,0],[0,0,1/2]]`

(d) `1/2[[-1/2,0,0],[0,-1,0],[0,0,-1]]`

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Solution for concept: Matrices - Inverse of a Matrix Existance. For the courses HSC Arts, HSC Science (Computer Science), HSC Science (Electronics), HSC Science (General)