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hmm, how do i prove this one? plus, (M^t)^-1 = (M^-1)^t
Quote: Originally Posted by experiment00 hmm, how do i prove this one? plus, (M^t)^-1 = (M^-1)^t from we conclude that it's really
if M is invertible, then , so is invertible
^T=(A^{-1}A)^T=I^T = I)
, so
is invertible