SubArea: Power and radical functionsLevel: AProject ID: 9000010606Source Problem: 2010012402Accepted: 1Clonable: 1Easy: 0Identify a function which is increasing on (−1;3).f(x)=(x+2)2f(x)=x2+xf(x)=x2−xf(x)=(x−2)2f(x)=−x3f(x)=x2+1