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Optimization

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Section 4.7

Optimization

Problem Solving Strategy –

- 1. Assign symbols to all given quantities and quantities to be determined ( make a sketch)
- 2. Write a primary equation for the quantity that is to be maximized or minimized.
- 3. Reduce the primary equation to one single independent variable.
- 4. Determine the domain.
- 5. Use calculus to find max or min.
- 6. VERIFY!!

- A farmer has 160 ft of fencing to enclose 2 adjacent rectangular pig pens. What dimensions should be used for each pig pen so that the enclosed area will be a minimum?

2. A man wants to plant a rectangular garden along one side of his house, with a picket fence on the other three sides of the garden. Find the dimensions of the largest garden that can be enclosed using 40 feet of fencing.

3. A rectangular page is to contain 24 square inches of print. The margins at the top and bottom of the page are to be 1.5 inches, and the margins on the left and right are to 1 inch. What should be the dimensions of the page so that the least amount of paper is used?

- Which points on the graph
are closest to the point (0,2)?