Math 134 - Enriched Linear Algebra
McGill University
Fall 2013
Assignment 2 Solutions
by Juan Ignacio Restrepo
1. Notice that the product of two upper triangular matrices is an upper triangular matrix again and
the diagonal entries are the products of the
Math 134 - Enriched Linear Algebra
McGill University
Fall 2013
Assignment 3 Solutions
by Juan Ignacio Restrepo
1. (a) No. Take 1 in the set and the real number 2. We have that 2 1 = 2 is not in the set.
(b) No. Take 1 1
(c) No. 0 0 0
2. (a)
(b)
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