# Matrices : Inverses and Determinants

2. (a) Find the matrix {see attachment}, evaluate |A| and use this to find {see attachment}

(b) The matrices A and B are given by {see attachment}. Find A-1 and show that B-1 does not exist {see attachment for proper citation}.

https://brainmass.com/math/matrices/matrices-inverses-determinants-28647

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2. (a) Since ,we have

(i) |-A|=|A|=5

(ii)

(iii) Since . We have

So,

(iv) Since , we have

So,

where I is the identity ...

#### Solution Summary

Inverses and Determinants of matices are investigated. The solution is detailed and well presented.

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