Question

ajutati-ma va rog,ex 11

DAU CORONA!!!​

Answer 1

D12 = { ±1, ±2, ±3, ±4, ±6, ±12}

B = { ±1, ±3, ±5, ±7, ±9, ±11}

C = { ±2, ±4, ±6, ±8, ±10}

a) D12 U B = { ±1, ±2, ±3, ±4, ±5, ±6, ±7, ±9, ±11, ±12}

b) D12 intersectat cu C = { ±2, ±4, ±6}

c) B intersectat cu C = { ∅ }

d) D12 \ B = { ±2, ±4, ±6, ±12}

e) D12 \ C = { ±1, ±3, ±12}

f) C \ D12 = { ±8, ±10 }

intersectat cu se scrie "U" intors