De Morgan’s laws

De Morgan’s laws state that: A + B ¯ = A ¯ . B ¯ and A . B ¯ = A ¯ + B ¯ https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780429294402/968186b9-ffa4-4f2b-aa54-7fc58a604561/content/eq2988.tif"/>