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. Be sure to identify at least three key points. Find the domain and range of the function.

g left parenthesis x right parenthesis equals left parenthesis x plus 4 right parenthesis cubed plus 6g(x)=(x+4)3+6

Solution

To graph the function g(x)=(x+4)3+6g(x) = (x + 4)^3 + 6, let's follow the process of shifting, stretching, compressing, and reflecting starting with the graph of the basic cubic function f(x)=x3f(x) = x^3.

Step-by-Step Graphing Process:

  1. Start with the base function: The base function is f(x)=x3f(x) = x^3, which is a standard cubic curve that passes through the origin (0,0)(0, 0) with the following key points:

    • (1,1)(-1, -1)
    • (0,0)(0, 0)
    • (1,1)(1, 1)

    It has an "S" shape, with increasing behavior for x>0x > 0 and decreasing for x<0x < 0.

  2. Shift left by 4 units: The term (x+4)(x + 4) means we shift the graph of f(x)=x3f(x) = x^3 4 units to the left. So, the key points are now:

    • (5,1)(-5, -1) (formerly (1,1)(-1, -1))
    • (4,0)(-4, 0) (formerly (0,0)(0, 0))
    • (3,1)(-3, 1) (formerly (1,1)(1, 1))
  3. Shift up by 6 units: The +6+6 at the end means we shift the entire graph up by 6 units. The key points after this shift are:

    • (5,1+6)=(5,5)(-5, -1 + 6) = (-5, 5)
    • (4,0+6)=(4,6)(-4, 0 + 6) = (-4, 6)
    • (3,1+6)=(3,7)(-3, 1 + 6) = (-3, 7)

Domain and Range:

  • Domain: The domain of g(x)g(x) is the set of all real numbers since a cubic function is defined for all xRx \in \mathbb{R}. Hence, the domain is (,)(-\infty, \infty).

  • Range: The range of g(x)g(x) is also all real numbers, as the cubic function takes on all values from negative infinity to positive infinity. Thus, the range is (,)(-\infty, \infty).

Key Points of the Transformed Function:

  • (5,5)(-5, 5)
  • (4,6)(-4, 6)
  • (3,7)(-3, 7)

Would you like more details or have any questions?

Here are five related questions for further practice:

  1. How would the graph change if the function was g(x)=(x+4)3+6g(x) = -(x + 4)^3 + 6?
  2. What if the function was g(x)=(x+4)36g(x) = (x + 4)^3 - 6? How would the range be affected?
  3. What are the inflection points of the basic cubic function f(x)=x3f(x) = x^3?
  4. How do you find the derivative of g(x)=(x+4)3+6g(x) = (x + 4)^3 + 6?
  5. Can you generalize the transformation for a function g(x)=(x+a)3+bg(x) = (x + a)^3 + b?

Tip: Always shift horizontally first before performing any vertical transformations when dealing with function transformations.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Function Transformation
Cubic Functions
Graph Shifting
Domain and Range

Formulas

g(x) = (x + 4)^3 + 6
Basic cubic function f(x) = x^3

Theorems

Basic Theorem of Cubic Functions
Domain and Range of Polynomial Functions

Suitable Grade Level

Grades 10-12