3. Define A_{i} = {. . . ,−2,−1,0,1, . . . , i} for all
integer i. Find

a)

b)

Community Answer

{:[" (a) "quadA_(i)={cdots","-2","-1","0","1","2","dots","i}],[=>A_(1)={-cdots","-2","-1","0","1}],[-A_(2)={cdots-","-2","-1","0","1","2}=>A_(1)subA_(2)],[A_(3)={--","-2","-1","0","1","2","3}=>A_(2)subA_(3)],[A_(n)={cdots-","-2","-1","0","1","2","dots","n}=>A_(n-1)subA_( ... See the full answer