SubArea: Analyzing function behaviorLevel: AProject ID: 1003261909Accepted: 1Clonable: 0Easy: 0Determine all the values of a, a∈R, such that the function f(x)=a2−13x3+(a−1)x2+2x+1 does not have any local extrema.a∈(−∞;−3]∪[1;∞)a∈(−∞;−3)∪(1;∞)a∈(−3;1)a∈[−3;1]