Math Problem Statement

dansk

Figuren viser grafen for et funktion f. Bestem ved hjælp af grafen f(1). Løs ved hjælp af grafen ligningen f(x) = 0 (OBS: husk alle løsninger). Bestem lokale ekstrema for f.

Solution

Let's go through each question based on the graph shown.

Solution

  1. Question (a): Find f(1)f(1).

    • From the graph, locate x=1x = 1 on the xx-axis and check the value of f(x)f(x) at that point. It appears that f(1)2f(1) \approx 2.
  2. Question (b): Solve f(x)=0f(x) = 0 (find all xx-values where f(x)=0f(x) = 0).

    • f(x)=0f(x) = 0 where the graph crosses the xx-axis. Based on the graph, the function intersects the xx-axis at two points:
      • x2.5x \approx -2.5
      • x=0x = 0
    • Thus, the solutions to f(x)=0f(x) = 0 are approximately x=2.5x = -2.5 and x=0x = 0.
  3. Question (c): Find the local extrema of ff.

    • Local extrema are points where the function reaches a local maximum or minimum. Observing the graph:
      • There is a local maximum at approximately x=1x = -1 with f(x)3f(x) \approx 3.
      • There is a local minimum at approximately x=0.5x = 0.5 with f(x)1f(x) \approx -1.

Summary of Answers

  • (a) f(1)2f(1) \approx 2.
  • (b) The solutions to f(x)=0f(x) = 0 are x2.5x \approx -2.5 and x=0x = 0.
  • (c) Local maximum at x1x \approx -1 and local minimum at x0.5x \approx 0.5.

Would you like further details on any specific part?

Related Questions

  1. How can we confirm the exact values for the local extrema using calculus?
  2. What is the significance of finding f(x)=0f(x) = 0 in understanding the function's behavior?
  3. How would you describe the end behavior of this function?
  4. What could be the possible degrees of the polynomial function based on the graph?
  5. How can we determine the intervals where the function is increasing or decreasing?

Tip

When analyzing a graph, pay close attention to the points where the function intersects the axes and any turning points; these are often critical points for solving various types of function-based problems.

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Math Problem Analysis

Mathematical Concepts

Functions
Graph Analysis
Zeros of Functions
Local Extrema

Formulas

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Theorems

Definition of Zeros
Definition of Local Extrema

Suitable Grade Level

Grades 10-12