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*u*and*v*are*m*-vectors, the matrix A = I +*uv** is known as a*rank-one perturbation of the identity.*Show that if A is nonsingular, then its inverse has the form A^{-1}= I + k*uv** for some scalar k, and give an expression for k. For what*u*and*v*is A singular? If it is singular, what is null(A)?I know I at least need help on the first part, but I might be able to get the rest after that.