Evaluating piecewise functions. Please help if you can.

  • Thread starter name_ask17
  • Start date
  • Tags
    Functions
In summary, the given problem is asking to evaluate a piecewise function using different numbers, including g(5). The poster is unsure about the correct method and asks for clarification, but later realizes the solution is simply following the given instructions and the answer is 11."
  • #1
name_ask17
146
0

Homework Statement



To make it clearer, I uploaded the problem to this attachment.

https://www.physicsforums.com/attachment.php?attachmentid=36660&stc=1&d=1308787359

The directions to this question tis to evalutate using several different numbers. One of the numbers given is g(5).

In this case, I do not understand what I have to do and this is summer homework so I cannot ask the teacher that gave this assignment.



The Attempt at a Solution



Is it just asking me to plug in the numbers so I would have 11, x>=3 and then -47, x< 3?

It seems too simple and really doesn't seem like the correct answer. I think I'm confused as to how I am supposed to evaluate this piecewise function. Any ideas here?
 

Attachments

  • Untitled.png
    Untitled.png
    1,009 bytes · Views: 576
Physics news on Phys.org
  • #2
Oh! forget that I asked this. I don't know what I was thinking. All i had to do was follow the commad x was asking, so this answer would be 11. lol
 

FAQ: Evaluating piecewise functions. Please help if you can.

What are piecewise functions?

A piecewise function is a mathematical function that is defined by different equations or rules for different intervals or segments of the function's domain. This means that the function's definition changes depending on which part of the domain the input falls into.

How do I evaluate a piecewise function?

To evaluate a piecewise function, you need to determine which interval or segment of the function's domain the input falls into. Then, use the corresponding equation or rule to calculate the output.

3. Can a piecewise function have more than two pieces?

Yes, a piecewise function can have any number of pieces. It can have two, three, four, or even more equations or rules that define different parts of the function's domain.

4. What is the purpose of using piecewise functions?

Piecewise functions are useful for modeling real-world situations where different rules or equations apply in different scenarios. They allow for more flexibility and accuracy in representing complex relationships between variables.

5. What are some common examples of piecewise functions?

Some common examples of piecewise functions include the absolute value function, the greatest integer function, and the floor and ceiling functions. These functions have different rules or equations for different intervals of the input.

Similar threads

Piecewise Function: Find Expression for Graph | Homework Help
Replies
4
Views
1K
Can this function still be a constant function?
Replies
11
Views
708
Making a piecewise function continuous everywhere
Replies
5
Views
2K
Confirm Limit Existence for Function f w/o Piecewise Def.
Replies
4
Views
1K
Piecewise Function Problem Clarification.
Replies
3
Views
11K
Writing an absolute value function as a piecewise function
Replies
2
Views
10K
MHB Evaluate Piecewise-Defined Function....2
Replies
2
Views
1K
Possible values an expression can take : ##\dfrac{x^2-x-6}{x-3}##
Replies
7
Views
1K
Evaluating a recursive function
Replies
4
Views
1K
Finding a Function Given a Condition
Replies
7
Views
1K

Hot Threads

Recent Insights

Back
Top