5.若定义在RRR上的奇函数f(x)f(x)f(x)在区间(0,+∞)(0,+\infty )(0,+∞)上单调递增,且fff(3)=0=0=0,则满足xf(x−2)<0xf(x-2)<0xf(x−2)<0的xxx的取值范围为((( )))