In Problems 14, indicate the approximate locations of all inflection points. How many inflection points are there?
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Textbook Solutions for Applied Calculus
Question
During a flood, the water level in a river first rose faster and faster, then rose more and more slowly until it reached its highest point, then went back down to its preflood level. Consider water depth as a function of time. (a) Is the time of highest water level a critical point or an inflection point of this function? (b) Is the time when the water first began to rise more slowly a critical point or an inflection point?
Solution
The first step in solving 4.2 problem number 8 trying to solve the problem we have to refer to the textbook question: During a flood, the water level in a river first rose faster and faster, then rose more and more slowly until it reached its highest point, then went back down to its preflood level. Consider water depth as a function of time. (a) Is the time of highest water level a critical point or an inflection point of this function? (b) Is the time when the water first began to rise more slowly a critical point or an inflection point?
From the textbook chapter INFLECTION POINTS you will find a few key concepts needed to solve this.
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