Math Problem Statement

A function g(x) is defined by g(x) = -log4(x - 3) + 2. Part A: Graph the logarithmic function g(x) and determine the domain, range, and x-intercepts. Show all necessary calculations. Part B: Determine the vertical and horizontal asymptotes of g(x). Show all necessary calculations. Part C: Describe the interval(s) in which the graph of g(x) is positive. Determine the end behavior of g(x).

Solution

Let's break down the problem step by step. The function given is:

g(x)=log4(x3)+2g(x) = -\log_4(x - 3) + 2

Part A: Graph the function, determine the domain, range, and x-intercepts.

  1. Domain:

    • The argument of the logarithm, x3x - 3, must be positive: x3>0    x>3x - 3 > 0 \implies x > 3 Thus, the domain is: (3,)\boxed{(3, \infty)}
  2. Range:

    • The base function log4(x3)-\log_4(x - 3) has a range of (,)(-\infty, \infty).
    • Adding +2+2 shifts the range vertically by 2, so the range remains: (,)\boxed{(-\infty, \infty)}
  3. X-Intercept:

    • To find the x-intercept, set g(x)=0g(x) = 0: log4(x3)+2=0-\log_4(x - 3) + 2 = 0 Rearrange: [ -\log_4(x - 3) = -2 \implies \log

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Math Problem Analysis

Mathematical Concepts

Logarithmic Functions
Transformations of Graphs
Domain and Range
Asymptotes
End Behavior

Formulas

y = log_b(x): The general logarithmic function.
Domain of log_b(x - c): x - c > 0.
Transformation formulas: Vertical shifts, horizontal shifts, and reflections.

Theorems

Properties of Logarithmic Functions
Asymptotes in Logarithmic Graphs

Suitable Grade Level

Grades 11-12