Question

alguém pode me ajudar???? *É URGENTE*

Answer 1

Oi!

1. A resolução de cada letra, respectivamente, está nas fotos que anexei.

2. A = {-1,0,1,2}, B = {0,1,2,3,4,5}, C = {2,3}, D = {-2,-1,0,1,2,3,4,5,...}

a) A∪B =  {-1,0,1,2} + {0,1,2,3,4,5} = {-1,0,1,2,3,4,5}

b) A∪C = {-1,0,1,2} + {2,3} = {-1,0,1,2,3}

c) A∪D = {-1,0,1,2} + {-2,-1,0,1,2,3,4,5,...} = {-2,-1,0,1,2,3,4,5,...}

d) A∪B∪C∪D = {-1,0,1,2} + {0,1,2,3,4,5} + {2,3} + {-2,-1,0,1,2,3,4,5,...} = {-2,-1,0,1,2,3,4,5,...}

3. A = {-1,0,1,2,3}, B = {0,1,2,3,4,5}

a) A∪B = {-1,0,1,2,3} + {0,1,2,3,4,5} = {-1,0,1,2,3,4,5}

b) A∩B = O que tem tanto em A quanto em B = {0,1,2,3,}

4. A = {2,3,4,5,6,7}, B = {5,6,7,8}

a) A∪B = {2,3,4,5,6,7} + {5,6,7,8} = {2,3,4,5,6,7,8}

b) A∩B = O que tem tanto em A quanto em B = {5,6,7}

5. A = {...-3,-2,-1,0,1,2,3,4}, B = {6,7,8,9,...}

a) A∪B = {...-3,-2,-1,0,1,2,3,4} + {6,7,8,9,...} = {...-3,-2,-1,0,1,2,3,4,6,7,8,9,...}

b) A∩B = O que tem tanto em A quanto em B = {∅} ou { }