Question

. Se consideră mulţimile
A={- 2; 0; 1;3} și B = {- 2; 5). Determină
mulţimile AXB, BXA, AXA și B x B
şi cardinalul acestora.​

Answer 1

Explicație pas cu pas:

A × B ={(-2,-2), (-2,5), (0,-2), (0,5), (1,-2), (1,5), (3,-2), (3,5)}

B × A = { (-2,-2), (-2,0), (-2,1), (-2,3), (5,-2), (5,0), (5,1), (5,3)}

A × A = { (-2,-2), (-2,0), (-2,1), (-2,3), (0,-2), (0,0), (0,1), (0,3), (1,-2), (1,0), (1,1), (1,3), (3,-2), (3,0), (3,1), (3,3)}

B × B = {(-2,-2), (-2,5), (5,-2), (5,5)}