Polynomial function transformation help

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Homework Help Overview

The discussion revolves around understanding the transformations of polynomial functions, specifically comparing f(x) = x^3 and g(x) = x^3 - x. Participants are exploring how the addition of -x affects the graph of the original function and what that means graphically.

Discussion Character

  • Exploratory, Conceptual clarification, Problem interpretation

Approaches and Questions Raised

  • Participants are attempting to identify the differences between the two functions and questioning how the transformation affects their graphical representation. There is also a suggestion to list differences and to evaluate specific points on the graph.

Discussion Status

The discussion is ongoing, with some participants expressing confusion about the transformations and their graphical implications. There is a mix of attempts to clarify the problem and explore different aspects of the functions without reaching a consensus.

Contextual Notes

Some participants mention a lack of clarity in the original question and the need for more specific guidance on how to represent the transformations graphically. There is also a reference to using specific points for evaluation, indicating a hands-on approach to understanding the functions.

Nelo
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Homework Statement


What is the difference between f(x)= x^3 , and g(x) = x^3 - x

What does that -x do to the function and how do you represent it graphically?

What about f(x) = 3x^3 +x


Homework Equations





The Attempt at a Solution



No idea, wolframalphad the graph but i don't get how to represent it or what it does to the graph.

Anyone help please??
 
Physics news on Phys.org
any1..?
 
Nelo said:

Homework Statement


What is the difference between f(x)= x^3 , and g(x) = x^3 - x

There's a lot of differences. Are you just supposed to list all of the differences that you can find?

Nelo said:
What does that -x do to the function and how do you represent it graphically?

This is also not worded very well. What does it do to f(x) how? As far as graphing it goes, just pick a few points and plug them in.
 
Yes.. list the differences, I don't get it.
 
So...

x^3 has points

-2 -8
-1 -1
0 0
1 1
2 8


So doing x^3 + x would be

-2 (-2)^3 + -2 = -10
-1 -2
0 0
1 2
2 10

I graphed it... looks almost exactly like a linear function, passes thru vertex to.. is taht right then?
 
zzz, anyone?
 

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