Calculus Maximus
WS 3.6: Optimization
7. If
, what is the minimum value of the product xy?
y
2
x
8
(A) 16
(B) 8
(C) 4
(D) 0
(E) 2
Short Answer:
8. A farmer wishes to erect a fence enclosing a rectangular area adjacent
to a barn which is 20 feet long. The diagram illustrates his plan for the
fenced area. Find the largest area that can be enclosed if 96 feet of
fencing material is available. Justify your answer.
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