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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Transcribed Image Text:**Title: Finding a Degree 3 Polynomial**
**Task:**
Find the polynomial \( P(x) \) of degree 3 whose graph is shown.
**Graph Description:**
- The graph is plotted on a Cartesian coordinate system with both x-axis and y-axis ranging from -5 to 5.
- The polynomial graph is a smooth curve passing through the following key points:
- The curve rises from the left, reaching a local maximum near (-2, 2).
- It then descends, crossing the x-axis near \( x = 0 \).
- A local minimum is observed near (1, -4).
- The curve continues upward beyond the x-axis on the right side.
**Characteristics of the Graph:**
- **Local Maximum**: Approximately at \( x = -2 \).
- **Local Minimum**: Approximately at \( x = 1 \).
- **X-Intercepts**: Around \( x = 0 \).
- The graph is symmetric in terms of rising and falling, typical of cubic functions.
**Understanding the Graph:**
- The leading coefficient is positive, indicated by the graph’s rise on the right side.
- The polynomial’s roots can be estimated by observing the x-intercepts.
- The turning points relate closely to the derivative of the cubic polynomial equation.
**Next Steps:**
To find the specific polynomial function \( P(x) \), use the key points and solve for variables in the general cubic equation form \( P(x) = ax^3 + bx^2 + cx + d \). Utilize methods such as polynomial fitting or algebraic manipulation for exact calculations.
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