问题
填空题
已知集合A={x|
|
答案
因为{0,1,2}⊂A,且{2.5,-2}∩A=∅,
若函数
=ax+b cx+d
时,-x+2.5 x+1
A={x|-1<x<2.5}满足{0,1,2}⊂A,且{2.5,-2}∩A=∅,
所以
=ax+b cx+d -x+2.5 x+1
故答案为-x+2.5 x+1
已知集合A={x|
|
因为{0,1,2}⊂A,且{2.5,-2}∩A=∅,
若函数
=ax+b cx+d
时,-x+2.5 x+1
A={x|-1<x<2.5}满足{0,1,2}⊂A,且{2.5,-2}∩A=∅,
所以
=ax+b cx+d -x+2.5 x+1
故答案为-x+2.5 x+1