Question

The interval on which the function $f(x)=2x^3 +12x^2 +18x-7$ is decreasing, is:

• A. [-3,-1]
• B. (-2,-1)
• C. [-3,0]
• D. [-2,-1]

Answer 1

Answer: (A)

[-3,-1]

Answer 2

The correct option is (A): [-3,-1]