Hello, I'm trying to define the Sherman-Morrison formula:
using the code
invA = A.^(-1)
Z = 1 + u'*invA*u
inv(A + u*u')=invA - 1/Z * invA * u*u' * invA.
I'm using Z here instead of alpha in the problem. It always returns to an error "Subscript indices must either be real positive integers or logicals". What does it mean? Can somebody help with it??
Matlab new starter here, all help would be appreciated. Thanks heaps!!