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Chapter 2: Problem 104
Janice claims that her firm's profits continue to go up, but the rate ofincrease is going down. a) Sketch a graph that might represent her firm's profits as a function oftime. b) Explain why the graph can go up while the rate of increase goes down.
Short Answer
Expert verified
The graph shows increasing profit with a flattening curve, indicating a decreasing rate of increase.
Step by step solution
01
Understand the Problem
You need to sketch a graph that shows an increasing profit, but with a decreasing rate of increase. This means the slope of the graph should decrease over time.
02
Sketching the Graph
Draw a curve that starts at the origin and increases, but starts to flatten out as it moves to the right. This represents the profit increasing over time, but at a decreasing rate.
03
Label the Axes
Label the horizontal axis as 'Time' and the vertical axis as 'Profit'.
04
Explain the Graph
The graph goes up, showing that profits are increasing. However, the slope of the graph (the rate of increase) is decreasing, which means the firm is still making more money over time, but the amount of new profit is smaller each period.
05
Conclusion
Profits can continue to increase while the rate of increase goes down. This happens when each period's profit increase is smaller than the previous period, which is shown by the curve flattening out over time.
Key Concepts
These are the key concepts you need to understand to accurately answer the question.
Rate of Change
The concept of rate of change is crucial when analyzing profit functions over time. The rate of change refers to how one quantity changes in relation to another. In the case of Janice's firm's profits, it's the change in profits over time. Mathematically, we express the rate of change as the derivative of the profit function with respect to time, denoted as \(\frac{dp}{dt}\). An increasing rate of change means that profits are growing faster over time, while a decreasing rate means that although profits are still increasing, they are growing more slowly. Clearly understanding this concept helps interpret real-world business situations like Janice's claim.
Decreasing Slope
Understanding a decreasing slope is essential to analyze the situation described in the exercise. The slope of a graph at any point represents the rate at which profits are increasing at that specific time. If the slope is steep, the rate of increase is high; if it’s less steep, the rate of increase is lower. A decreasing slope means that, although the profit continues to rise, it does so at a slower and slower pace. To visualize this, draw the curve with a gradually flattening path over time. This flattening visually signifies that each subsequent time period sees smaller gains compared to the previous one. So, while the profit never stops increasing, the increments get smaller and smaller.
Graph Interpretation
Effective graph interpretation is crucial for understanding the behavior of the profit function over time. By labeling the horizontal axis as 'Time' and the vertical axis as 'Profit,' you can clearly see how time affects profit. The steepness and shape of the curve reveal insightful details about the rate of profit increase. A curve that rises quickly and then begins to flatten out indicates that although profits are increasing, the rate at which they grow is slowing down. This can be explained as the business reaching a point where additional profit becomes harder to generate. Thus, interpreting the graph accurately provides valuable insights into the dynamics of profit over time and helps in decision-making.
Time Series Analysis
Time series analysis involves studying a series of data points ordered in time to observe patterns and predict future behavior. In Janice's case, a time series analysis of profit over months or years can showcase trends and patterns. Drawing a graph provides a visual representation of this analysis. It helps identify trends (like increasing profits) and shifts (like a decreasing rate of increase). This type of analysis is useful for long-term business planning and strategy. Calculating the derivative at various points helps in identifying how the rate of profit increase changes over time, thus allowing for timely decisions to mitigate slowing growth.
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