Question

定义集合运算A*B={x|x=a-b,x∈A,y∈B｝,设集合A=｛0,1｝,B=｛2,3｝,求集合A

Answer 1

∵A*B={x|x=a-b,x∈A,y∈B｝

A=｛0,1｝,B=｛2,3｝

∴a=0时,b=2 x=-2

b=3,x=-3

a=1时,b=2,x=a-b=-1

b=3,x=a-b=-2

∴A*B={-3,-2,-1}