Math Problem Statement

اختر (صواب) أو (خطأ) للعبارة الآتية: التمثيل البياني للدالة y = (1/2)^x هو (صواب أم خطأ؟)

Solution

To solve this question, let's analyze the given information.

The problem states:

  • Equation: y=(12)xy = \left( \frac{1}{2} \right)^x
  • Graph: The question asks if the given graph represents the equation y=(12)xy = \left( \frac{1}{2} \right)^x.

Step-by-Step Analysis:

  1. Function Type:

    • The equation y=(12)xy = \left( \frac{1}{2} \right)^x represents an exponential decay function because the base 12\frac{1}{2} is between 0 and 1.
    • This type of function generally decreases as xx increases.
  2. Expected Graph Shape:

    • For y=(12)xy = \left( \frac{1}{2} \right)^x:
      • As x+x \to +\infty, y0y \to 0 (the graph approaches the x-axis from above).
      • As xx \to -\infty, y+y \to +\infty (the graph rises sharply for negative xx values).
  3. Graph Observation:

    • The graph shown in the image appears to be increasing as xx increases, which is characteristic of an exponential growth function, not exponential decay.
    • This suggests the graph might represent a function like y=2xy = 2^x, where the base is greater than 1, rather than y=(12)xy = \left( \frac{1}{2} \right)^x.

Conclusion:

The statement in the question is false. The graph does not represent the function y=(12)xy = \left( \frac{1}{2} \right)^x.

Would you like more details or have any further questions?


Here are 5 related questions:

  1. What are the characteristics of exponential growth and decay functions?
  2. How does the base of an exponential function affect its graph?
  3. What are some real-world examples of exponential decay?
  4. How can we determine the y-intercept of an exponential function?
  5. How do transformations affect the graph of an exponential function?

Tip: For exponential functions, if the base is between 0 and 1, the function represents decay; if the base is greater than 1, it represents growth.

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Math Problem Analysis

Mathematical Concepts

Exponential Functions
Exponential Decay

Formulas

y = (1/2)^x

Theorems

Characteristics of Exponential Growth and Decay

Suitable Grade Level

Grades 9-11