Technical information
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: _CRE1_ _La función [f left parenthesis x right parenthesis equals # f] es decreciente si y sólo si:_: x∈]-4/9#r50[; x#pertReal-]-4/9#w50[; x∈[-1#k3oo_[; x∈#q1infinito_negativo,-1]
Right answer summary: x∈]-4/9#r50[
Question state: todo