衡水名师卷2022调研卷答案

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5+2x(x<-1f(x)=13(-1≤x≤1),(2分)5-2x(x>1),由f(x)>2的不等式的解集为{x(4分)(Ⅱ)因为|x-1+|x+1≥|x-1-x-12,所以f(x)=5-(|x-11+|x+11)≤5-2=3,即f(x)的最大值为3,所以m=3,所以a+b+c=2(6分)又由均值不等式有:=+a≥2b,+b≥2c三式相加可得:a+a+b+b++c≥2b+2c+2a,所以一+b≥a+b+c=2(10分)

短文改错Dad asked me to buy a china flowerpot online, but I did that. A few days later, I received a text messagetelling meA pick it up at a nearby store. I went to get it, but strangely, I heard a clearly noise inside it.toclearopened a parcel, only to find that the plate had been broken into two piece. I instantly contacted witthestore owner and sent a photo to him, where could prove the truth. Soon I got a reply say ,Im sorry, I willwhicsayingsend another one tomorrow. "I had to go home with the breaking plate. The next day, I received a new flower-brokerpot with a perfect plate and I unite the first plate with glue, I have two flowerpots now lunited