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Math H54: Sample Midterm I, Fall 2314 2. Mark each statement True or False. Justify your answer or give a counter
example.
a b (a)I If A = c d , and all — ed 545 11], then A is invertible. (b) Let A be an n x 11. matrix. If two columns of A are the same, then the
determinant det A = D. (e) Let A he an n x 11 matrix. If the rows of A are linearlyr dependent, then the
columns of A are linearlj,r dependent.

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