Math Problem Statement

Exponential growth function f(x)=76 (1.032)^x

Solution

The function f(x)=76(1.032)xf(x) = 76 (1.032)^x represents exponential growth. Here's a detailed analysis of the function:

  1. Initial Value: The initial value of the function, when x=0x = 0, is f(0)=76f(0) = 76. This is the starting value of the function.

  2. Growth Factor: The base of the exponential term, 1.0321.032, is the growth factor. It indicates that the quantity increases by 3.2%3.2\% per unit of xx.

  3. Rate of Growth: The growth rate is derived from the growth factor: Growth Rate=(1.0321)×100%=3.2%.\text{Growth Rate} = (1.032 - 1) \times 100\% = 3.2\%.

  4. Behavior: As xx \to \infty, f(x)f(x) \to \infty, which means the function grows indefinitely. As xx \to -\infty, f(x)0+f(x) \to 0^+, approaching zero but never reaching it.

  5. Graph Characteristics:

    • Shape: The graph is upward-sloping and becomes steeper as xx increases, illustrating rapid growth over time.
    • Intercept: The y-intercept is at (0,76)(0, 76).

Example Calculations:

  • At x=1x = 1: f(1)=76(1.032)1=78.432f(1) = 76 \cdot (1.032)^1 = 78.432.
  • At x=5x = 5: f(5)=76(1.032)589.045f(5) = 76 \cdot (1.032)^5 \approx 89.045.
  • At x=2x = -2: f(2)=76(1.032)271.343f(-2) = 76 \cdot (1.032)^{-2} \approx 71.343.

Would you like further examples or a graph of this function?


Related Questions:

  1. What is the doubling time of this exponential function?
  2. How does the function behave when the growth factor changes to 1.051.05?
  3. What is the derivative of this function, and what does it tell us?
  4. Can you compare this growth to linear growth with the same initial value and rate?
  5. How would the function look with a decay factor instead, e.g., 0.97x0.97^x?

Tip:

To find when the value doubles, solve 761.032x=15276 \cdot 1.032^x = 152.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Exponential Functions
Growth Rate
Graphing Exponential Equations

Formulas

Exponential growth formula: f(x) = a(b)^x
Growth rate: Growth Rate = (b - 1) × 100%

Theorems

Properties of Exponential Functions

Suitable Grade Level

Grades 10-12