Given functions for and for , find the rule and range of the composite function .

Answer and explanation

Correct answer: A. with range

  1. Step 1: Substitute the inner function into : .
  2. Step 2: Since the domain of is and for all real , is defined for all . As ranges over , assumes every real value, giving a range of .
Answer
with range .
Why not the others: The rule omits applying the natural logarithm; the rule neglects subtracting 1 inside the logarithmic argument; the rule subtracts 1 twice.

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