Aspire Faculty ID #17639 · Topic: JAMIA MILLIA ISLAMIA MCA 2025 · Just now
JAMIA MILLIA ISLAMIA MCA 2025

The determinant of the identity matrix of order 3 is :

Solution

Identity matrix

$I_3 = \begin{bmatrix} 1 & 0 & 0 \ 0 & 1 & 0 \ 0 & 0 & 1 \end{bmatrix}$


Determinant of a diagonal matrix = product of diagonal elements

$|I_3| = 1 \times 1 \times 1 = 1$

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