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Analyze the domain and range of each rational function. Then compare the similarities and differences.

Analyze the domain and range of each rational function. Then compare the similarities and differences.

Answer

Domain and Range of f(x):

  1. Domain: The function f(x) = (x + 5) / (x - 2) is undefined when the denominator is zero. Therefore, x ≠ 2. The domain is all real numbers except x = 2.
  2. Range: The range is all real numbers except the horizontal asymptote, which occurs at y = 1 (as x approaches infinity, f(x) approaches 1).

Domain and Range of g(x):

  1. Domain: The function g(x) = (x + 3) / (x + 1) is undefined when the denominator is zero. Therefore, x ≠ -1. The domain is all real numbers except x = -1.
  2. Range: The range is all real numbers except the horizontal asymptote, which occurs at y = 1 (as x approaches infinity, g(x) approaches 1).

Similarities and Differences:

  1. Both functions have a horizontal asymptote at y = 1.
  2. Both functions have a vertical asymptote where the denominator is zero (x = 2 for f(x) and x = -1 for g(x)).
  3. The domain and range restrictions are similar, but occur at different x-values due to the different vertical asymptotes.

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