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The determinant of identity matrix is?

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The determinant of identity matrix is?

(a) 1

(b) 0

(c) Depends on the matrix

(d) None of the mentioned

The question was asked by my school teacher while I was bunking the class.

Query is from Properties of Matrices in division Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics

1 Answer

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Best answer
The correct choice is (a) 1

For explanation: In identity matrix aii = 1, and all other elements = 0, hence the determinant is 1.

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