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© 2014, John Bird 249 CHAPTER 16 EXPONENTIAL FUNCTIONS EXERCISE 64 Page 136 1. Evaluate the following, correct to 4 significant figures: (a) e –1.8 (b) e – 0.78 (c) e 10 Using a calculator: (a) e –1.8 = 0.1653, correct to 4 significant figures (b) e – 0.78 = 0.4584, correct to 4 significant figures (c) e 10 = 22 030, correct to 4 significant figures 2. Evaluate the f ollowing, correct to 5 signifi cant figures: (a) e 1.629 (b) e –2.7483 (c) 0.62e 4.178 Using a calculator: a) e 1.629 = 5.0988, correct to 5 significant figures (b) e –2.7483 = 0.064037, correct to 5 significant figures (c) 0.62e 4.178 = 40.446, correct to 5 significant figures 3. Evaluate correct to 5 decim al places: (a) 1 7 e 3.4629 (b) 8.52e –1.2651 (c) 2.6921 1.1171 5e 3 e Using a calculator: (a) 1 7 e 3.4629 = 4 .55848, correct to 5 decimal places (b) 8.52e –1.2651 = 2.40444, correct to 5 decimal places (c) 2.6921 1.1171 5e 3e = 8.05124, correct to 5 decimal places 4. Evaluate correct to 5 decimal places: (a) 2.1347 5.6823 e − (b) 2.1127 2.1 127 e e 2 − − (c) 1.7295 3.6817 4 (e 1 ) e − −
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