Finding Your Position on a Football FieldDate: 11/1/95 at 15:31:22 From: Navigator Subject: help on a function Suppose you start at the goal line of a football field and walk toward the other goal line. After you have walked x yards, you will be on the F(x) yard-line. For example, after you walk 60 yards you are on the 40 yard line. Write a function F(x) that represents your position on the football field after walking x yards from the goal line. Give the domain of this function and the range of your function. Could you please assist me on this problem. Your help is greatly appreciated. John Reichel 102344.1331@compuserve.com Date: 11/3/95 at 14:57:30 From: Doctor Ken Subject: Re: help on a function Hello! Here's a hint that may help you solve this problem. Try using the "absolute value" function. It's defined by Abs(x) = Sqrt{x^2}. Its graph looks like this: ^ | | \ | / \ | / \ | / \ | / \ | / \ | / \ | / \ | / \ | / \ | / \|/ -----------------------------|---------------------------> | x-axis | | | | | | | |y-axis Where the v actually goes off at 45 degree angles to the x- and y- axes. Good luck! -Doctor Ken, The Geometry Forum |
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