Question: Consider the function below. f ( x ) = x 3 + 3 x 2 + 3 x + 9 Answer the questions below Part

Consider the function below.
f(x)=x3+3x2+3x+9
Answer the questions below
Part 1:
Enter your answers in interval notation. If the set is empty, type DNE.
On what interval is the function f concave-up?
On what interval is the function f concave-down?
Part 2:
Consider the function below. f(x)=x3+3x2+3x+9 Answer the questions below Part 1:

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