Math Problem Statement

Begin by graphing f left parenthesis x right parenthesis equals log Subscript 3 Baseline x . Then use transformations of this graph to graph the given function. What is the vertical​ asymptote? Use the graphs to determine the given​ function's domain and range. g left parenthesis x right parenthesis equals log Subscript 3 Baseline left parenthesis x plus 2 right parenthesis Question content area bottom left Part 1 Graph the function g left parenthesis x right parenthesis equals log Subscript 3 Baseline left parenthesis x plus 2 right parenthesis . Graph the asymptote of​ g(x) as a dashed line. Use the graphing tool to graph the function. Part 2 What is the vertical asymptote of​ g(x)? enter your response here ​(Type an​ equation.) Part 3 What is the domain of g left parenthesis x right parenthesis equals log Subscript 3 Baseline left parenthesis x plus 2 right parenthesis ​? enter your response here ​(Simplify your answer. Type your answer in interval​ notation.) Part 4 What is the range of g left parenthesis x right parenthesis equals log Subscript 3 Baseline left parenthesis x plus 2 right parenthesis ​? enter your response here ​(Simplify your answer. Type your answer in interval​ notation.)

Solution

To address each part of this problem, we can start by examining the function f(x)=log3(x)f(x) = \log_3(x) and its transformation to create g(x)=log3(x+2)g(x) = \log_3(x + 2).

Part 1: Graph of g(x)=log3(x+2)g(x) = \log_3(x + 2)

  1. Basic Graph: The base function f(x)=log3(x)f(x) = \log_3(x) is a logarithmic function with a vertical asymptote at x=0x = 0 and is defined for x>0x > 0.

  2. Transformation: The function g(x)=log3(x+2)g(x) = \log_3(x + 2) is a horizontal shift of f(x)f(x) by 2 units to the left. This transformation affects the vertical asymptote, moving it to x=2x = -2.

  3. Graph:

    • The graph of g(x)=log3(x+2)g(x) = \log_3(x + 2) will have a similar shape to f(x)=log3(x)f(x) = \log_3(x), but shifted left by 2 units.
    • The vertical asymptote will be located at x=2x = -2.

Part 2: Vertical Asymptote of g(x)g(x)

The vertical asymptote of g(x)=log3(x+2)g(x) = \log_3(x + 2) is at:

x=2x = -2

Part 3: Domain of g(x)=log3(x+2)g(x) = \log_3(x + 2)

Since g(x)g(x) is defined for values where x+2>0x + 2 > 0, we have:

x>2x > -2

Thus, the domain of g(x)g(x) in interval notation is:

(2,)(-2, \infty)

Part 4: Range of g(x)=log3(x+2)g(x) = \log_3(x + 2)

The range of a logarithmic function like g(x)=log3(x+2)g(x) = \log_3(x + 2) is all real numbers, as it can take any value from -\infty to \infty. Therefore, the range is:

(,)(-\infty, \infty)


Would you like further details on each part or visual assistance with the graph? Here are a few related questions for practice:

  1. How would the graph change if the function were h(x)=log3(x2)h(x) = \log_3(x - 2)?
  2. What would be the effect of a vertical stretch on g(x)g(x)?
  3. What is the horizontal asymptote of an exponential function with base 3?
  4. How does the domain of logb(x+k)\log_b(x + k) change with different values of kk?
  5. Can the logarithmic function logb(x)\log_b(x) ever have a finite range?

Tip: For logarithmic functions, remember that horizontal shifts affect the vertical asymptote, but vertical shifts do not.

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Math Problem Analysis

Mathematical Concepts

Logarithmic Functions
Function Transformations
Graphing Logarithmic Functions

Formulas

f(x) = log_3(x)
g(x) = log_3(x + 2)

Theorems

Transformation of functions
Domain and range of logarithmic functions

Suitable Grade Level

Grades 10-12