3 (x² + y²) 20 < x < 30, 20

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How would I find the expected difference of this function?

### Piecewise Function Description

In mathematics, a piecewise function is defined by different expressions for different intervals of the domain. Here, we have a two-variable function \( f(x,y) \) defined as follows:

\[ f(x,y) = \begin{cases} 
\frac{3} {380000} (x^2 + y^2) & \text{if } 20 \leq x \leq 30 \text{ and } 20 \leq y \leq 30 \\
0 & \text{otherwise}
\end{cases} \]

Let's break this down:

- For \( x \) and \( y \) values within the inclusive range of 20 to 30, the function \( f(x,y) \) is given by:
  \[
  f(x,y) = \frac{3} {380000} (x^2 + y^2)
  \]
  
- For \( x \) and \( y \) values outside the aforementioned range, the function \( f(x,y) \) takes on a value of 0.

**Explanation:**

1. **Case 1: \( 20 \leq x \leq 30 \) and \( 20 \leq y \leq 30 \)**
   - Within this range, the function combines the squares of the variables \( x \) and \( y \) and multiplies the result by \(\frac{3}{380000}\).

2. **Case 2: Otherwise**
   - If \( x \) and \( y \) values do not fall within the defined range (either \( x \) or \( y \) or both fall outside 20 to 30), the function equals zero.

This type of function is useful in modeling real-world phenomena where different rules apply to different ranges of data.
Transcribed Image Text:### Piecewise Function Description In mathematics, a piecewise function is defined by different expressions for different intervals of the domain. Here, we have a two-variable function \( f(x,y) \) defined as follows: \[ f(x,y) = \begin{cases} \frac{3} {380000} (x^2 + y^2) & \text{if } 20 \leq x \leq 30 \text{ and } 20 \leq y \leq 30 \\ 0 & \text{otherwise} \end{cases} \] Let's break this down: - For \( x \) and \( y \) values within the inclusive range of 20 to 30, the function \( f(x,y) \) is given by: \[ f(x,y) = \frac{3} {380000} (x^2 + y^2) \] - For \( x \) and \( y \) values outside the aforementioned range, the function \( f(x,y) \) takes on a value of 0. **Explanation:** 1. **Case 1: \( 20 \leq x \leq 30 \) and \( 20 \leq y \leq 30 \)** - Within this range, the function combines the squares of the variables \( x \) and \( y \) and multiplies the result by \(\frac{3}{380000}\). 2. **Case 2: Otherwise** - If \( x \) and \( y \) values do not fall within the defined range (either \( x \) or \( y \) or both fall outside 20 to 30), the function equals zero. This type of function is useful in modeling real-world phenomena where different rules apply to different ranges of data.
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