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Cross-sectional Area The cross-sectional area of a beam cut from a log with radius 1 foot is given by the function , where represents the length, in feet, of half the base of the beam. See the figure.
(a) Find the domain of A.
(b) Use a graphing utility to graph the function .
(c) Create a TABLE with and for . Which value of maximizes the cross-sectional area? What should be the length of the base of the beam to maximize the cross-sectional area?
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Chapter 2 Solutions
EBK PRECALCULUS
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