Question

Why is the set A={0,1,4,9,16,...} can be writtenas A={ x^2:€Z}

Answer 1

we write A={0,1,4,9,16,....}as A={x²:x€Z}because in roster form we write the set in a pattern and different form by finding . when we put x=0,1,4,9,16.these all are square of 0,1,2,3,4.......