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- 1函数F(X)=3+log以二分之一为底,x的对数,(x>=1)则他的反函数的定义域为?
- 2some birds are fiying in the sky there is a lake in the south of picture and two boats are on
- 3制造一批零件,按计划18天可以完成它的二分之一,如果工作3天后,工作效率提高了8分之一.一共需要几天
- 4下列物质充分燃烧后的产物均CO2和H2O.相同分子数目1.C2H5OH 2.CH3OH 3.CH4 4.C2H4,耗O2的质量相等的是?
- 5求一篇写雨的文章,100字左右
- 6y方-1/6-1/6=0 (x-1)方+(x-1)-6=0 2x方-7x+3=0 (x-1)方=2(1-x) 解方程(初三的题)
- 7翻译,英文翻译中文!1.What are you going to be in the future?2.What’s your interest?Please say
- 8点A、B为抛物线y^2=4x上原点以外的两个动点,已知OA⊥OB,求证直线AB过定点
- 9was it (snow) yesterday?
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