Math Problem Statement

find domain and range, find increase, decrease, and constant, find zero of f

Find domain and range, find increase, decrease, and constant, find zero of f.

Solution

Let's break down the analysis of the graph provided for y=f(x)y = f(x).

1. Domain:

The domain is the set of all xx-values for which the function is defined. By observing the graph:

  • The function starts at x=4x = -4 (closed circle, included point), and ends at x=5x = 5 (open circle, excluded point). Thus, the domain is: Domain: [4,5)\text{Domain: } [-4, 5)

2. Range:

The range is the set of all possible yy-values of the function. From the graph:

  • The minimum yy-value is 00, occurring at x4.5x \approx 4.5, and the maximum yy-value is 88, occurring at x=2x = -2. Thus, the range is: Range: [0,8]\text{Range: } [0, 8]

3. Intervals of Increase, Decrease, and Constant:

  • Increasing: The function is increasing where the slope of the curve is positive.

    • From x=4x = -4 to x=2x = -2, the function is increasing.
    • From x3x \approx 3 to x=5x = 5, the function is also increasing.
    • Increasing intervals: (4,2)(3,5)(-4, -2) \cup (3, 5)
  • Decreasing: The function is decreasing where the slope of the curve is negative.

    • From x=2x = -2 to x=3x = 3, the function is decreasing.
    • Decreasing interval: (2,3)(-2, 3)
  • Constant: There is no section where the function is constant.

4. Zeros of f(x)f(x) (where f(x)=0f(x) = 0):

The zero of the function is where the curve intersects the x-axis (i.e., where y=0y = 0).

  • From the graph, the zero is located at x=3x = -3. Thus, the zero is: Zero: x=3\text{Zero: } x = -3

Would you like to dive deeper into any specific part of this problem?

Here are some related questions:

  1. How would we find the critical points of this function?
  2. Can we approximate the derivative of f(x)f(x) based on the graph?
  3. How do we describe the concavity of the graph?
  4. How can we use limits to describe the behavior of the function near x=5x = 5?
  5. How could the function be modeled algebraically based on the graph?

Tip: When analyzing functions graphically, always check for open and closed endpoints to determine whether certain values are included in the domain or range.

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Math Problem Analysis

Mathematical Concepts

Functions
Domain and Range
Increasing and Decreasing Intervals
Zeros of Functions

Formulas

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Theorems

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Suitable Grade Level

Grades 9-12