 Hello friends, welcome to the session. I am Malka. We are going to discuss matrices. We have to compute the four line We have to add the two given matrices our first matrix is a b minus b a and our second matrix is a b b a Now let's start with the solution as we all know that to obtain the resultant of the two given matrices That is by addition. We have to add the corresponding elements of the given matrices. So On adding two matrices, we get a plus a b plus b minus b plus b a plus a This is equal to 2a 2b 0 and 2a Def the matrix 2a 2b 0 2a is a required matrix. Hope you understood the solution and enjoyed the session. Goodbye and take care