Question

Дискретная математика
Помогите решить 2 задания

Answer 1

$((Boplus C)backslash(Bbackslash C))bigcap B=(((Bbigcup C)backslash(Bbigcap C) )backslash(Bbackslash C))bigcap B=\ ((Bbigcup C)backslash( (Bbigcap C)bigcup(Bbackslash C) ))bigcap B=((Bbigcup C)backslash B)bigcap B=(Cbackslash B)bigcap B=o$

-------------------------------------------------------------------------------------$overline{(overline{C}backslash(Coplus B))bigcup C}=overline{(overline{C}backslash((Bbigcup C)backslash(Bbigcap C)))bigcup C}=overline{( (overline{C}backslash(Bbigcup C))bigcup(overline{C} bigcap B bigcap C ))bigcup C}=overline{( (overline{C}backslash(Bbigcup C))bigcup o)bigcup C}=overline{( (overline{C}backslash B)backslash C)bigcup C}=overline{( overline{C}backslash B)bigcup C}=overline{( overline{C}backslash B)}bigcap overline{C}=$$=overline{overline{Cbigcup B}}bigcap overline{C}=(Cbigcup B)bigcap overline{C}=(Cbigcap overline{C})bigcup (Bbigcap overline{C})=obigcup (Bbigcap overline{C})=Bbigcap overline{C}=Bbackslash C$