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Unformatted text preview: rectangular area? (Solution) Similar to the problem 2. Let be the length and width of the rectangular field, respectively. Then . Thus, Thus the area The standard form of the quadratic function is Notice that we are interested in the y value which makes A maximum. Hence we don’t have to know ?? part now. Hence (width) and hence (length) 4. Flights of leaping animals typically have parabolic paths. The figure illustrates a frog jump superimposed on a coordinate plane. The length of the leap is 15 feet, and the MA153 JIN maximum height off the ground is 5 feet. Find a standard equation for the path of the frog. (Solution) The coordinate of the parabola is , and the coordinate of the parabola is 5. Hence the quadratic function is Since the parabola passes through the origin (0,0), Hence . Thus, . 5. [In class]...
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This document was uploaded on 02/26/2012.
 Fall '08

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