Question Detail

MTH 102 Differentiation Objective Question

Question

Find the range of \( x \) for which \( y = x^3 - 6x^2 + 12 \) is decreasing.
Options
A \( x < 0 \)
B \( x > 4 \)
C \( 0 < x < 4 \)
Correct Answer
D All real numbers
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.

Question Info