MAT 194 Ans Key Fall 04

# MAT 194 Ans Key Fall 04 - ≈ 15.395 5(a t ≈ 87.4 years(b...

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MAT 194 Fall 2008 Final Exam Answer Key 1. (a) f x = 3x 2 (b) g x = 1 3 x 2 (c) 0,2 2. (a) x -4 -3 -2 -1 0 1 2 3 4 f(x) 9 4 1 0 1 0 -1 -2 -3 (b) (c) All real numbers (d) All real numbers (e) No. There would be more than one output for some inputs. For example, f 1 0 = 1 and f 1 0 = 1 3. (a) − 2,0 , 2,0 , 7,0 (b) x = 3 and x = 4 (c) y = 3 (d) f x = 4 x 4 2 x 7 x 3  x 4 2 4. (a) t = 65 (b) x = 10,000 (c) x = ln 21  3 4 1.511 (d) x = ln 8 5 ln 1.031 15.395

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Unformatted text preview: ≈ 15.395 5. (a) t ≈ 87.4 years (b) Pu ≈ 51.2 lbs 6. (b) y = 4 (c) 2 3 (d) P = 12 (e) See graph below 7. (a) − 2,0 , 1,0 (b) 0,1 (c) f x = 1 2 x 1 x − 1 2 = 1 2 x 3 − 3 2 x 1 8. (a) f x = − 1 2 x 2 − 1 2 x 1 (b) f x = − 1 2 x 1 2 2 9 8 (c) 9 8...
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