Not considering the domain and range

Oct 13, 2025 by wbrum.org 145 views

In Exercise 8.2.1, Problem #7: A Piecewise Function for Event Fees

In the previous exercise, you were tasked with creating a piecewise function to represent the fee charged as a function of the number of people attending an event. The function is of the form:

f(x) = \begin{cases} Bx & \text{if } 1 \leq x \leq B

where $B$ is a constant representing the maximum number of people that can attend the event. In this article, we will delve into the details of creating this piecewise function and explore its implications.

A piecewise function is a function that is defined by multiple sub-functions, each of which is applied to a specific interval of the domain. In this case, the function $f(x)$ is defined as follows:

If the number of people attending the event is between 1 and $B$ (inclusive), the fee charged is given by the linear function $Bx$ .
If the number of people attending the event is greater than $B$ , the fee charged is not defined in this function.

To create the piecewise function, we need to define the sub-functions for each interval of the domain. In this case, we have two sub-functions:

For $1 \leq x \leq B$ , the sub-function is $f(x) = Bx$ .
For $x > B$ , the sub-function is not defined.

We can represent this piecewise function using the following notation:

f(x) = \begin{cases} Bx & \text{if } 1 \leq x \leq B

To visualize the piecewise function, we can graph the sub-functions for each interval of the domain. For the sub-function $f(x) = Bx$ , we can graph a line with slope $B$ and y-intercept 0. For the sub-function that is not defined for $x > B$ , we can graph a vertical line at $x = B$ .

The piecewise function $f(x)$ has several properties that are worth noting:

Domain: The domain of the function is the set of all real numbers $x$ such that $1 \leq x \leq B$ .
Range: The range of the function is the set of all real numbers $y$ such that $0 \leq y \leq B^2$ .
Continuity: The function is continuous for $1 \leq x \leq B$ , but it is not continuous for $x > B$ .
Differentiability: The function is differentiable for $1 \leq x \leq B$ , but it is not differentiable for $x > B$ .

The piecewise function $f(x)$ has several applications in real-world scenarios:

Event planning: The function can be used to calculate the fee charged for an event based on the number of people attending.
Cost estimation: The function can be used to estimate the cost of an event based on the number of people attending.
Revenue prediction: The function can be used to predict the revenue generated by an event based on the number of people attending.

In conclusion, the piecewise function $f(x)$ is a useful tool for representing the fee charged as a function of the number of people attending an event. The function has several properties, including a domain, range, continuity, and differentiability. The function also has several applications in real-world scenarios, including event planning, cost estimation, and revenue prediction.

[1] "Piecewise Functions". Math Open Reference. Retrieved 2023-02-28.
[2] "Event Planning". Eventbrite. Retrieved 2023-02-28.
[3] "Cost Estimation". Project Management Institute. Retrieved 2023-02-28.
[4] "Revenue Prediction". Harvard Business Review. Retrieved 2023-02-28.
Q&A: Piecewise Functions for Event Fees

In our previous article, we explored the concept of piecewise functions and how they can be used to represent the fee charged as a function of the number of people attending an event. In this article, we will answer some frequently asked questions about piecewise functions and their applications in event planning.

A piecewise function is a function that is defined by multiple sub-functions, each of which is applied to a specific interval of the domain. In the case of the event fee function, the piecewise function is defined as follows:

f(x) = \begin{cases} Bx & \text{if } 1 \leq x \leq B

We need a piecewise function for event fees because the fee charged for an event depends on the number of people attending. If the number of people attending is between 1 and $B$ (inclusive), the fee charged is given by the linear function $Bx$ . If the number of people attending is greater than $B$ , the fee charged is not defined in this function.

The value of $B$ is determined by the event planner or organizer. It represents the maximum number of people that can attend the event. For example, if the event planner wants to limit the number of attendees to 100, then $B = 100$ .

Some common applications of piecewise functions in event planning include:

Event registration fees: Piecewise functions can be used to calculate the registration fee for an event based on the number of people attending.
Ticket pricing: Piecewise functions can be used to determine the ticket price for an event based on the number of tickets sold.
Revenue prediction: Piecewise functions can be used to predict the revenue generated by an event based on the number of people attending.

To graph a piecewise function, we need to graph the sub-functions for each interval of the domain. For the sub-function $f(x) = Bx$ , we can graph a line with slope $B$ and y-intercept 0. For the sub-function that is not defined for $x > B$ , we can graph a vertical line at $x = B$ .

Some common mistakes to avoid when working with piecewise functions include:

Not defining the sub-functions correctly: Make sure to define the sub-functions for each interval of the domain.
Not graphing the sub-functions correctly: Make sure to graph the sub-functions for each interval of the domain.
Not considering the domain and range: Make sure to consider the domain and range of the function when working with piecewise functions.

Piecewise functions can be used in a variety of real-world scenarios, including:

Event planning: Piecewise functions can be used to calculate the fee charged for an event based on the number of people attending.
Cost estimation: Piecewise functions can be used to estimate the cost of an event based on the number of people attending.
Revenue prediction: Piecewise functions can be used to predict the revenue generated by an event based on the number of people attending.

In conclusion, piecewise functions are a powerful tool for representing the fee charged as a function of the number of people attending an event. By understanding the concept of piecewise functions and their applications in event planning, we can make informed decisions about event fees and revenue prediction.

[1] "Piecewise Functions". Math Open Reference. Retrieved 2023-02-28.
[2] "Event Planning". Eventbrite. Retrieved 2023-02-28.
[3] "Cost Estimation". Project Management Institute. Retrieved 2023-02-28.
[4] "Revenue Prediction". Harvard Business Review. Retrieved 2023-02-28.