Question

Write a set A={-1, 1,-i, i} in set builder form​

Answer 1

Answer:

give me a excellent to get answer

Answer 2

Answer:

ANSWER

Clearly −1 and 1 are the roots of x

2

=1

Hence given set in set builder form can be written as,

A={x:x is root of the equation x

2

=1}

Note that: this representation is not unique,

but among the given option only option 'C' is correct