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5. Is the subset D= {z :0 < Arg(z) < T/4, z 0} open? 6. Is the subset D = {z : |2| <
5. Is the subset D= {z :0 < Arg(z) < T/4, z 0} open? 6. Is the subset D = {z : |2| < 1}U{z :|z+2| < 1} connected? 7. Prove that the subset D = {z :|z| < 1} is an open set.
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Linear Algebra A Modern Introduction
Authors: David Poole
4th edition
1285463242, 978-1285982830, 1285982835, 978-1285463247
