Question

write the set{-1,1} in set builderform​

Answer 1

Answer:

{ x : | x | = 1 }

Step-by-step explanation:

{ x : | x | = 1 }

here | x | means the absolute value of x

which means only positive.

suppose x = -1

then,

| -1 | = 1

and

| 1 | = 1