Math Problem Statement

Explain your answer and reasoning. I believe the 'h' component is different ( X horizontal translation )

Are the transformations that occur to y=f(x) the same for y=f(5(x+1)) and y=f(5(x+2))?

Solution

The problem asks whether the transformations that occur for y=f(5(x+1))y = f(5(x+1)) and y=f(5(x+2))y = f(5(x+2)) are the same. The key transformations here involve the horizontal translations and how they affect the function.

Let's break it down:

  1. General form of a function transformation: y=f(a(xh))+ky = f(a(x - h)) + k where:

    • aa affects the horizontal stretch/compression.
    • hh represents the horizontal shift (translation).
    • kk represents the vertical shift (translation).
  2. For y=f(5(x+1))y = f(5(x+1)):

    • This can be rewritten as y=f(5(x(1)))y = f(5(x - (-1))), indicating a horizontal shift to the left by 1 unit (since h=1h = -1).
    • The factor of 5 inside the function also affects the horizontal compression by a factor of 15\frac{1}{5}.
  3. For y=f(5(x+2))y = f(5(x+2)):

    • This can be rewritten as y=f(5(x(2)))y = f(5(x - (-2))), indicating a horizontal shift to the left by 2 units (since h=2h = -2).
    • Again, the factor of 5 results in a horizontal compression by a factor of 15\frac{1}{5}.

Are the transformations the same?

  • Horizontal Compression: Both functions have the same compression by a factor of 5.
  • Horizontal Translation: The two functions have different horizontal shifts. The first function, y=f(5(x+1))y = f(5(x+1)), is shifted left by 1 unit, while the second function, y=f(5(x+2))y = f(5(x+2)), is shifted left by 2 units.

Conclusion:

The transformations are not the same because the horizontal translations differ. While both functions undergo the same horizontal compression (due to the factor of 5), the horizontal shifts are different: one moves left by 1 unit, and the other by 2 units.

Let me know if you'd like further details or clarifications!

Here are some related questions:

  1. What is the effect of the horizontal compression on the graph of a function?
  2. How do vertical translations affect the function y=f(x)y = f(x)?
  3. What happens to the graph of f(x)f(x) when you replace xx with xhx-h?
  4. How would the transformations change if the factor inside the function was 15\frac{1}{5} instead of 5?
  5. How do multiple transformations, like translation and stretching, combine when applied to a function?

Tip: Always rewrite transformations clearly in terms of the standard form a(xh)a(x-h) to identify shifts and compressions/stretching correctly.

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Math Problem Analysis

Mathematical Concepts

Function transformations
Horizontal translation
Horizontal compression

Formulas

y = f(a(x-h)) + k
Horizontal compression: factor of 1/a
Horizontal shift: h units

Theorems

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Suitable Grade Level

Grades 10-12