Question Detail
Question
Range where \( y = 2x^3 - 3x^2 - 12x + 2 \) is increasing?
Correct Answer
Option A is the correct answer.
Detailed Explanation
( y' = 6x^2 - 6x - 12 = 6(x-2)(x+1) > 0 ). This occurs when ( x < -1 ) or ( x > 2 ).
Hint
Solve the inequality where the derivative is positive.