Which of the following subsets of the vector space Mnn are subspaces?
(a) The set of all n × n symmetric matrices
(b) The set of all n × n diagonal matrices
(c) The set of all n × n nonsingular matrices
1 answer
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(a) The set of all n × n symmetric matrices
(b) The set of all n × n diagonal matrices
(c) The set of all n × n nonsingular matrices
1 answer