SubArea: Analyzing function behaviorLevel: BProject ID: 9000070303Source Problem: 9000070302Accepted: 1Clonable: 1Easy: 0Given function f(x)=−x3+6x2+6x+1, find the intervals where f is a strictly concave up function.(−∞;2)(−1;∞)(−∞;3)(−∞;6)
