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74592 assignment
Qno.A1
Only matrices with same number of rows and columns can be added.
a) A+D is not valid
b) A is 2x3 and B is 3x3 hence AB is 2x3
We multiply each element of I row of A with each element of I column of B and add to get a11 of product matrix. Similarly I row of A with ii col of B for a12 and so on.
AB=
c) B’CB
C is 2x2 while B is 3x3 hence not valid
d) B is 3x3 and A’ is 3x2 hence valid product of 3x2 matrix
*=
e) D is 2x1 while C is 2x2 hence multiplication not compatible.
A2.
To...