Math Problem Statement

Find the average value fave of the function f on the given interval. f(x) = x^2/(x3 + 10)^2 , [−2, 2]

Solution

To find the average value favef_{\text{ave}} of the function f(x)=x2(x3+10)2f(x) = \frac{x^2}{(x^3 + 10)^2} on the interval [2,2][−2, 2], we use the formula for the average value of a function over a closed interval:

fave=1baabf(x)dxf_{\text{ave}} = \frac{1}{b - a} \int_a^b f(x) \, dx

Here, f(x)=x2(x3+10)2f(x) = \frac{x^2}{(x^3 + 10)^2}, and the interval is [2,2][-2, 2], so a=2a = -2 and b=2b = 2.

The formula becomes:

fave=12(2)22x2(x3+10)2dxf_{\text{ave}} = \frac{1}{2 - (-2)} \int_{-2}^{2} \frac{x^2}{(x^3 + 10)^2} \, dx

This simplifies to:

fave=1422x2(x3+10)2dxf_{\text{ave}} = \frac{1}{4} \int_{-2}^{2} \frac{x^2}{(x^3 + 10)^2} \, dx

Next, we can solve the integral using appropriate techniques (such as substitution or numerical methods if necessary). Since the function doesn't have an elementary antiderivative, this will likely require numerical integration.

Let me calculate the integral and provide the result.The average value favef_{\text{ave}} of the function f(x)=x2(x3+10)2f(x) = \frac{x^2}{(x^3 + 10)^2} over the interval [2,2][-2, 2] is approximately 0.0370.037.

Would you like further details or have any questions? Here are five related questions for deeper understanding:

  1. What are the general steps for calculating the average value of a function on an interval?
  2. How would the average value change if the interval were different?
  3. Can the integral of f(x)=x2(x3+10)2f(x) = \frac{x^2}{(x^3 + 10)^2} be computed analytically?
  4. How does the behavior of f(x)f(x) influence the result of its average value?
  5. What is the significance of average values of functions in practical applications?

Tip: The average value of a function gives insight into its overall behavior across an interval, summarizing the function's "height" in terms of an area interpretation.

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Math Problem Analysis

Mathematical Concepts

Calculus
Average Value of a Function
Definite Integrals

Formulas

Average value of a function: f_ave = (1 / (b - a)) * ∫_a^b f(x) dx

Theorems

Fundamental Theorem of Calculus

Suitable Grade Level

Grades 11-12 or College Level Calculus