The inverse of matrix \(N = \begin{vmatrix} 2 & 3 \\ 1 & 4 \end{vmatrix}\) is

Assessment: JAMB UTME - Mathematics - 2011 Subject: General Mathematics

Question 1 Report

The inverse of matrix \(N = \begin{vmatrix} 2 & 3 \\ 1 & 4 \end{vmatrix}\) is

Answer Details
N = [2 3]
N-1 =  a d j N | N |
adj N =  | 4 − 3 − 1 2 |
|N| = (2 x4) - (1 x 3)
= 8 - 3
=5
N-1 =  1 5  

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