Question

Wyznacz zbiory A u B , A n B , A - B oraz B - A , jeśli : a) A = ( -2 , -1, 0, 1, 5 ) , B = ( 1, 3, 8 ) b) A= ( 1 , 2, 3, 4, 5 ) , B = ( 5 , 4 , 3 , 2 , 1 ) c) A= ( 5, 7 , 9 , 11 ) , B = ( 7 , 9 ) d) A= ( 3 , 4 , 5 ) , B = ( 3 , 4 , 5 , 6, 7 ,) e) A = ( -1, -2 , -3 ) , B = ( 1, 2 , 3 ,) f) A = ( -5 , -3 , -1 , 1 , 3 , 5 ) , B = ( 1,2 3,4,5,) pliss pomóżcie :)

Answer 1

a)

A = ( -2 , -1, 0, 1, 5 ) 

B = ( 1, 3, 8 )

A u B = {-2,-1,0,1,3,5,8}

A n B = {1}

A \ B = {-2 , -1, 0, 5 }

B \ A ={3, 8 }

b)

A= ( 1 , 2, 3, 4, 5 )

B = ( 5 , 4 , 3 , 2 , 1 )

A u B ={ 1, 2, 3, 4, 5}

A n B ={ 1, 2, 3, 4, 5}

A \ B = zbiór pusty

B \ A = zbiór pusty

c)

A= ( 5, 7 , 9 , 11 )

B = ( 7 , 9 )

A u B = { 5, 7 , 9 , 11 }

A n B = { 7 , 9 }

A \ B = { 5,11 } 

B \ A = zbiór pusty

d)

A= ( 3 , 4 , 5 )

B = ( 3 , 4 , 5 , 6, 7 ,)

A u B = { 3,4,5,6,7}

A n B = {3 , 4 , 5 }

A \ B = zbiór pusty

B \ A = {6,7}

e)

A = ( -1, -2 , -3 )

B = ( 1, 2 , 3 ,)

A u B = {-3,-2,-1 ,1, 2,3} 

A n B= { zbiór pusty }

A \ B = {-1,-2,-3 }

B \ A = { 1, 2 , 3 }

f)

A = ( -5 , -3 , -1 , 1 , 3 , 5 )

B = ( 1,2 3,4,5,)

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

A n B = { 1, 3, 5 }

A \ B = {-5 , -3 , -1 }

B \ A = zbiór pusty