ANSWERS: 2
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Assuming that your question is: Let A and B be 2x2 matrices, let [4 3] and [2 0] be the first and second rows of A, respectively. Let [3 6] and [2 3] be the first and second columns of B, respectively. If D=A+B, then the D11 element of D^-1 is = The following is a link that will show you how add A and B to obtain D: http://en.wikipedia.org/wiki/Matrix_addition and the following link will show you how to invert matrix D: http://mathworld.wolfram.com/MatrixInverse.html I like the above link because it gives you a special formula for 2x2 matrices that is very easy to perform. If you still have a problem, please feel free to contact me. :)
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