List the members of these sets.

a. (xlx is a real number such that x2 =1)
b. (xl x is a positive integer less than 12)
c. (xl x is the square of an integer and x < 100)
d. (xl x is an integer such that x2=2)

Answer with Step-by-step explanation:

a.

x is a real number

Therefore, the set={-1,1}

b.x is a positive integer less than 12

Therefore, the value of x are

1,2,3,4,5,6,7,8,9,10,11

Set={1,2,3,4,5,6,7,8,9,10,11}

c.x is a square of an integer and x<100

Therefore, the value of x can be

1,4,9,16,25,36,49,64,81

Set={1,4,9,16,25,36,49,64,81}

d.x is an integer such that

But x is an integer

and are not integers.

Therefore, there is no integer element which satisfied

Set=Null set=

add all the numbers and check the ones place.

the answer is 486. as the ones place is more than 4, the estimation will be the next 10 ie, 490

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.