上海市初三2012数学毕业考卷

2012上海市初三各区数学一模答案急需长宁CCBCBA7.3√28.1/29.-5e（箭头）10.6011.1/2(a-b)（箭头）12.313.(3,0)14.y=-(x-1)^2+115.(√5-1)/216.5cm17.8/3or3/228.5/2or2or4√2-319.120.2a-3b（箭头）21.略22.1)略2)EF=123.0.6m24.注意P可在DA延长线上1)分两种情况证明2)y=-x^2/4+3/2x(0<x<6)y=x^2/4-3/2x(x>6)3)分两种情...