成都市实验外国语学校2012直升生选拔考试 数学试题答案

成都市实验外国语学校2012直升生选拔考试 数学试题答案
不需详细答案，只要最后结果

一.选择题
1.A 2.D 3.D 4.D 5.B 6.C 7.C 8.2(无正确选项) 9.C 10.D
二.填空题
1.-3 2.50 3.9/10（分数）4.2/13√13 5.3 6.10 7.1:√3:2 8.2009 9.3 10.0,+ -4
三.解答题
1.294 2.（1）27/4√3 （2）Y=(1-X2)/X 取值：√3/2小于等于X小于1 (3)Y=√3/6
3.(1)Y=-2X2+12X-8 (2)1>当t小于等于2时：Y最小=1/2t2-3 2>当0小于等于t小于等于1时：Y最小=-3 3>当t大于1时：Y最小=1/2t2-t-5/2
4.(1)Y=√3/3x-√3/2（2）略（3）略

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白日做梦

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