Calculus: Early Transcendentals
8th Edition
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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![The given image shows a graph of a function. The graph includes a marked point which is indicated by a black dot. Here is the transcription and detailed explanation:
---
### Understanding the Derivative at a Point on a Function
**Graph Description:**
- The graph portrays a function `f(x)` with a marked black dot at a specific point on the curve.
- The x-axis ranges from -5 to 5.
- The y-axis ranges from -1 to 1, with horizontal grid lines at `y = -1`, `y = 0`, and `y = 1`.
- The marked point appears to be at the peak of a local maximum near the x-coordinate of -2.
**Question:**
At the point shown on the function above, which of the following is true?
- ○ \( f' = 0 \)
- ○ \( f' < 0 \)
- ○ \( f' > 0 \)
**Explanation:**
- The function appears to reach a local maximum at the marked point.
- At a local maximum, the slope of the tangent to the curve is horizontal.
- Therefore, the derivative of the function at this point is zero.
By observing the graph, we can deduce that:
#### At the point shown on the function above, the correct answer is:
- **○ \( f' = 0 \)**
---](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8c845cf8-3d77-4ddd-9d5a-2a560adfc5de%2F4e5da42b-877f-4b10-a7aa-7752c01fd020%2F8e0phj_processed.jpeg&w=3840&q=75)
Transcribed Image Text:The given image shows a graph of a function. The graph includes a marked point which is indicated by a black dot. Here is the transcription and detailed explanation:
---
### Understanding the Derivative at a Point on a Function
**Graph Description:**
- The graph portrays a function `f(x)` with a marked black dot at a specific point on the curve.
- The x-axis ranges from -5 to 5.
- The y-axis ranges from -1 to 1, with horizontal grid lines at `y = -1`, `y = 0`, and `y = 1`.
- The marked point appears to be at the peak of a local maximum near the x-coordinate of -2.
**Question:**
At the point shown on the function above, which of the following is true?
- ○ \( f' = 0 \)
- ○ \( f' < 0 \)
- ○ \( f' > 0 \)
**Explanation:**
- The function appears to reach a local maximum at the marked point.
- At a local maximum, the slope of the tangent to the curve is horizontal.
- Therefore, the derivative of the function at this point is zero.
By observing the graph, we can deduce that:
#### At the point shown on the function above, the correct answer is:
- **○ \( f' = 0 \)**
---
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