This is for #1 section 8.4 in Hoffman and Kunze's Linear Algebra book. Any help and detailed explanations will be greatly appreciated! Thanks.
Find a unitary matrix which is not orthogonal and an orthogonal matrix which is not unitary.
The definitions of unitary and orthogonal matrices must be in your books or notebooks, and you also can find them on web pages ...
A unitary matrix which is not orthogonal and an orthogonal matrix which is not unitary are found. The solution is detailed and well presented. The response received a rating of "5/5" from the student who originally posted the question.