Math Problem Statement

If f(x) = ln(x), what is the transformation that occurs if g(x) = ln(x + 2)?

Solution

The question asks about the transformation between f(x)=ln(x)f(x) = \ln(x) and g(x)=ln(x+2)g(x) = \ln(x + 2).

Explanation:

The transformation between these two functions involves a horizontal shift:

  • The function f(x)=ln(x)f(x) = \ln(x) is shifted horizontally because the term inside the logarithm has changed from xx to x+2x + 2.
  • Adding 2 inside the function, i.e., g(x)=ln(x+2)g(x) = \ln(x + 2), means that the graph of f(x)f(x) is shifted to the left by 2 units. This is because ln(x+c)\ln(x + c) causes a shift to the left by cc units when c>0c > 0.

Thus, the correct answer is:

  • Shift 2 to the left.

Do you need any more details or have questions?

Here are some related questions to expand your understanding:

  1. What transformation occurs when f(x)=ln(x)f(x) = \ln(x) becomes g(x)=ln(x3)g(x) = \ln(x - 3)?
  2. How would you shift f(x)=ln(x)f(x) = \ln(x) vertically?
  3. What happens to the graph of f(x)=ln(x)f(x) = \ln(x) if g(x)=ln(x)g(x) = -\ln(x)?
  4. How do you reflect the graph of f(x)=ln(x)f(x) = \ln(x) over the x-axis?
  5. What kind of transformation would result in the equation g(x)=ln(2x)g(x) = \ln(2x)?

Tip: Horizontal transformations inside a function affect the x-values, while vertical transformations (outside the function) affect the y-values.

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Math Problem Analysis

Mathematical Concepts

Logarithmic Functions
Function Transformation
Horizontal Shift

Formulas

f(x) = ln(x)
g(x) = ln(x + c)

Theorems

Horizontal Shifts in Function Transformation

Suitable Grade Level

Grades 9-12