Question

Orice exercitiu de aici ( 2,3,6,7 ) va rog din suflet! Va rog, ajutati.ma!!! Orice exercitiu ajuta!! Urgent!

Answer 1

Răspuns:

Explicație pas cu pas:

1 A={-4,-3}

B={1,2,3}

a)AXB={(-4,1),(-4,2),(-4,3),(-3,1),(-3,2),(-3,3)}

b) BXA={(1,-4),(1,-3),(2,-4).(2,-3),(3,-4,(3,-3)}

c)AXA={(-4,-4),(-4,-3),(-3,-4),(-3,-3)}

d)BXB={(1,1),(1,2),(1,3),(2,1),(2,2),(2,3),(3,1),(3,2),(3,3)}

2  a)Card (AXB)=15  Card A=5 ⇒ Card B=3

b)Card(AXB)=Card(BXA)=10