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Unformatted text preview: x 15. ; 5 3 ) ( 3 5 t t t f-= 2 ≤ ≤-t 16. ; 1 ) ( u u u f + = > u 17. ; 1 1 ) ( + = x x f ≥ x 18. A carpenter has been asked to build an open box with a square base. The sides of the box will cost $3 per square metre, and the base will cost $4 per square meter. What are the dimensions of the box of greatest volume that can be constructed for $48? 19. A truck is 300 miles due east of a car and is traveling east at the constant speed of 30 miles per hour. Meanwhile, the car is going north at the constant speed of 60 miles per hour. At what time will the car and truck be closest to each other?...
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This note was uploaded on 03/19/2012 for the course COMP 3868 taught by Professor Keithchan during the Spring '97 term at Hong Kong Polytechnic University.
- Spring '97