Math Problem Statement

Starting with the graph of a basic​ function, graph the following function using the techniques of​ shifting, compressing,​ stretching, and/or reflecting. Find the domain and range of the function.

g left parenthesis x right parenthesis equals left parenthesis x plus 3 right parenthesis cubed minus 1

Solution

To graph the function g(x)=(x+3)31g(x) = (x + 3)^3 - 1, we can apply a sequence of transformations to the basic cubic function f(x)=x3f(x) = x^3. Let's break down the steps:

Step-by-step Transformations:

  1. Start with the basic function:
    The parent function is f(x)=x3f(x) = x^3, which has an "S"-shaped curve passing through the origin (0, 0).

  2. Horizontal shift (left by 3 units):
    The term (x+3)(x + 3) shifts the graph of f(x)=x3f(x) = x^3 to the left by 3 units. So, every point on the graph of f(x)=x3f(x) = x^3 moves left by 3 units.
    Now, the graph passes through the point (-3, 0) instead of (0, 0).

  3. Vertical shift (down by 1 unit):
    The 1-1 at the end shifts the graph down by 1 unit. So, the point that was at (-3, 0) moves to (-3, -1), and the entire graph is shifted down by 1 unit.

Domain and Range:

  • Domain: The domain of g(x)=(x+3)31g(x) = (x + 3)^3 - 1 is the set of all possible xx-values for which the function is defined. Since there are no restrictions on the value of xx in a cubic function, the domain is: Domain=(,)\text{Domain} = (-\infty, \infty)

  • Range: The range is the set of all possible yy-values that the function can take. Since cubic functions can take any real value and this function is simply a shifted version of the basic cubic, the range is also: Range=(,)\text{Range} = (-\infty, \infty)

Summary of Transformations:

  • Left shift by 3 units.
  • Down shift by 1 unit.

Graph Description:

The resulting graph will be an "S"-shaped curve passing through the point (-3, -1), with the general cubic shape preserved. The function grows indefinitely in both directions, so it will continue to rise as xx \to \infty and fall as xx \to -\infty.


Would you like me to provide a detailed graph or further clarification?

Here are 5 related questions:

  1. How do horizontal and vertical stretches affect the graph of a cubic function?
  2. What is the effect of reflecting a cubic function over the x-axis or y-axis?
  3. Can you describe how combining multiple transformations (e.g., reflections and shifts) affects the function's graph?
  4. What happens to the graph of g(x)=x3g(x) = x^3 when compressed vertically or horizontally?
  5. How would you determine the inverse of a cubic function?

Tip: When transforming graphs, always apply shifts before stretches or reflections to simplify the process.

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Math Problem Analysis

Mathematical Concepts

Functions
Transformations
Cubic Functions

Formulas

g(x) = (x + 3)^3 - 1

Theorems

Transformation of Functions
Domain and Range Theorems

Suitable Grade Level

Grades 9-12