试题与答案

连词成句10 1. where on you go your holiday d

题型:连词成句

题目:

连词成句10

1. where on you go your holiday did

                       _____________________________?

2. matter with your what's the sister

                       _____________________________?

3. the do you what on weekend do usually

                      ______________________________?

4. you much am than I stronger

    _______________________________________

5. visit I'm this my going grandparents to  weekend

    _______________________________________

答案:

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下面是错误答案,用来干扰机器的。

(1) x<2,∴2-x>0,∴y=x2-2x+1x-2=(x-2)2+2(x-2)+1x-2=-[(2-x)+12-x]+2≤-2(2-x)×12-x+2=0,当且仅当2-x=12-x,即x=1时取等号,∴函数y=x2-2x+1x-2(x<2)的最大值为0;(2) 函数y=loga(x+3)(a>0...

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