# FIND INVERSE AND ADJOINT OF MATRICES WITH THEIR PROPERTIES WORKSHEET

Find Inverse and Adjoint of Matrices with Their Properties Worksheet :

Here we are going to see some practice problems of finding inverse and adjoint of matrices.

## Find Inverse and Adjoint of Matrices with Their Properties Worksheet - Practice questions

(1)  Find the adjoint of the following :

Solution

Solution

Solution

(2)  Find the inverse (if it exists) of the following:

Solution

Solution

Solution

(3)

Solution

(4)

Solution

(5)  If  A  =

Solution

(6)

Solution

(7)

Solution

(8)

Solution

(9)

(10)

(11)

(12)

(13)

(14)

(15)  Decrypt the received encoded message [2    -3]  [20     4] with the encryption matrix

and the decryption matrix as its inverse, where the system of codes are described by the numbers 1-26 to the letters A− Z respectively, and the number 0 to a blank space.               Solution

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