Question
Let $$A = \left( {\matrix{ 1 & 0 & 0 \cr 0 & 4 & { - 1} \cr 0 & {12} & { - 3} \cr } } \right)$. Then the sum of the diagonal elements of the matrix ${(A + I)^{11}}$$ is equal to :
Let $$A = \left( {\matrix{ 1 & 0 & 0 \cr 0 & 4 & { - 1} \cr 0 & {12} & { - 3} \cr } } \right)$. Then the sum of the diagonal elements of the matrix ${(A + I)^{11}}$$ is equal to :