Question

A= {x :x is a natural number, x2 < 16}
B = {x : x is an integer; [xl <4}
i) Write A and B in roster form.
) Find AUB, and AB.​

Answer 1

Answer:

{ 1  , 2 , 3}

{ 1  , 2 , 3,  -1 , - 2 , - 3}

Step-by-step explanation:

A= {x :x is a natural number, x² < 16}

x = 1 , 2 , 3

A = { 1  , 2 , 3}

B = {x : x is an integer; [xl <4}

x = 1 , 2 , 3 , -1 , - 2 , - 3

B =  { 1  , 2 , 3 ,  -1 , - 2 , - 3}

AUB = { 1  , 2 , 3,  -1 , - 2 , - 3}