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Unformatted text preview: Answer: (3 ,1 2 ) S (2 , ∞ ) 5. (10 points) Find an equation of the line through (1 , 2) which is perpendicular to the line 2 x + 5 y + 8 = 0. Answer:5 x + 2 y9 = 0 6. (15 points) (a) Sketch the graph of f ( x ) = 2( x1) 3 . (b) What is the range of f ? (c) Is f onetoone? Why? (d) Find f1 . Answer: b) (∞ , ∞ ), c) yes by the horizontal line test, d) f1 ( x ) = 1 + 3 √ 2x 7. (15 points) What quantity of a 60% acid solution must be mixed with a 30% solution to produce 300 mL of a 50% solution? Answer: 200 mL 2...
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This note was uploaded on 10/18/2011 for the course W 1003 taught by Professor Staff during the Spring '11 term at Columbia.
 Spring '11
 Staff

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