The function is defined by for . Find the range of .

Answer and explanation

Correct answer: B.

  1. Step 1: The least value of is 0, which occurs at , inside the domain. Step 2. So . **Answer: . Why not the others:** : That uses the -restriction as the lower bound of the range. : That ignores the vertical translation. : That reverses the inequality; the parabola opens upwards.

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