The function has a local maximum. What is its value?

Answer and explanation

Correct answer: A. 5

  1. Step 1: , so or . Step 2. is negative at , so the maximum is . Answer: 5. Why not the others: f(0)=1 is the intercept; 9 and 3 are not function values at the maximum (f(3)=1 is the minimum).

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