Level:
Project ID:
9000070301
Accepted:
1
Clonable:
0
Easy:
0
Given function \(f(x)= x^{3} - 9x^{2} + 12x + 6\), find
the intervals where \(f\)
is a strictly concave down function.
\((-\infty ;3)\)
\((-\infty ;4)\)
\((-\infty ;6)\)
\((-\infty ;12)\)