Use the graph of the derivative f' of a continuous function fis shown. (Assume f' continues to o.) 4 y=f'(x) 2 6 -2 4,

Calculus: Early Transcendentals
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ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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On what intervals is F concave upward. (interval notation)

### Understanding the Graph of the Derivative

This graph illustrates the derivative \( f'(x) \) of a continuous function \( f \). The horizontal axis represents the \( x \)-values, and the vertical axis represents the derivative values \( y = f'(x) \).

**Graph Analysis:**

1. **Axes and Scale:**
   - The \( x \)-axis is labeled with values ranging approximately from 0 to 8.
   - The \( y \)-axis is labeled with values ranging from -4 to 4.

2. **Derivative Behavior:**
   - The graph starts below the \( x \)-axis, indicating negative derivative values, meaning the original function \( f \) is decreasing.
   - As \( x \) approaches 2, the derivative becomes positive, and the graph crosses the \( x \)-axis, indicating a change in the behavior of \( f \) from decreasing to increasing.
   - Around \( x = 4 \), the derivative reaches a peak and then decreases, approaching zero. This suggests a local maximum point on the original function \( f \).
   - Near \( x = 6 \), the graph dips below the \( x \)-axis again, indicating that \( f \) is decreasing.
   - Beyond \( x = 8 \), the graph moves upward back toward the \( x \)-axis, suggesting a transition back to increasing for \( f \).

3. **Continuity:**
   - The problem assumes that the derivative \( f' \) continues indefinitely, implying that these trends perpetuate.

This graph is essential for understanding the behavior and critical points of the original function \( f \). The changes in the sign and magnitude of the derivative give insight into where \( f \) is increasing, decreasing, and where it might have local maxima or minima.
Transcribed Image Text:### Understanding the Graph of the Derivative This graph illustrates the derivative \( f'(x) \) of a continuous function \( f \). The horizontal axis represents the \( x \)-values, and the vertical axis represents the derivative values \( y = f'(x) \). **Graph Analysis:** 1. **Axes and Scale:** - The \( x \)-axis is labeled with values ranging approximately from 0 to 8. - The \( y \)-axis is labeled with values ranging from -4 to 4. 2. **Derivative Behavior:** - The graph starts below the \( x \)-axis, indicating negative derivative values, meaning the original function \( f \) is decreasing. - As \( x \) approaches 2, the derivative becomes positive, and the graph crosses the \( x \)-axis, indicating a change in the behavior of \( f \) from decreasing to increasing. - Around \( x = 4 \), the derivative reaches a peak and then decreases, approaching zero. This suggests a local maximum point on the original function \( f \). - Near \( x = 6 \), the graph dips below the \( x \)-axis again, indicating that \( f \) is decreasing. - Beyond \( x = 8 \), the graph moves upward back toward the \( x \)-axis, suggesting a transition back to increasing for \( f \). 3. **Continuity:** - The problem assumes that the derivative \( f' \) continues indefinitely, implying that these trends perpetuate. This graph is essential for understanding the behavior and critical points of the original function \( f \). The changes in the sign and magnitude of the derivative give insight into where \( f \) is increasing, decreasing, and where it might have local maxima or minima.
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