Let A be a 3 \times 3 matrix such thatA \times \begin{bmatrix}1 & | Filo

Class 12

Math

Algebra

Determinants

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Let be a matrix such that

Then is:

Solution:
We are given,
Now multiplying both sides with we get, (pre-multiplication)
or, [ Since where is the identity matrix of order .]
or,

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