Which of (a)(d) are true for a = 4 and b = 5? (a) 2a < 2b

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Which of (a)–(d) are true for a = 4 and b = −5?

(a) −2a < −2b 

(b) |a| < −|b| 

(c) ab < 0
(d) 1/a < 1/b

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Calculus

ISBN: 9781319055844

4th Edition

Authors: Jon Rogawski, Colin Adams, Robert Franzosa

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