SubArea: Analyzing function behaviorLevel: BProject ID: 2010013905Source Problem: 2010013906Accepted: 0Clonable: 1Easy: 0Suppose a function is concave down on the interval [−1;2]. Which one of the offered functions has that property?g(x)=−2x+8f(x)=−x+2(x+3)2h(x)=x2−1xk(x)=12x3+3x2−x+2
