Question Detail
Question
Find the range of \( x \) for which \( y = x^3 - 6x^2 + 12 \) is decreasing.
Correct Answer
Option C is the correct answer.
Detailed Explanation
( y' = 3x^2 - 12x < 0 \implies 3x(x - 4) < 0 \implies 0 < x < 4 ).
Hint
Determine where the first derivative is negative.