一批产品共110件,全部合格,则这批产品的合格率为110%。(判断对错)
(Ⅰ)求M;
(Ⅱ)证明:当a,b∈M时,|a+b|<|1+ab|.
读图,回答问题。
Linda went to the teacher's office to ask Miss Hu _______help.