Question

7 ) Dados os conjuntos M={ x є R / x > 1 e x < 4}, N={ x є R / x < -2 ou x > 6 } e O={ x є R / x < -1, } , determinar ( M U n ) - O

Answer 1

$M\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{------------------------1**********4-----------------------------}\\ N\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{******-2------------------------------------------6***********}\\ M\cup N\ \ \ \ \ \ \ \ \ \text{******-2--------------1**********4-----------6***********}\\ O\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{***********-1-----------------------------------------------------}\\ (M\cup N)-O\ \text{------------------------1**********4------------6**********}$

Resposta: (M ∪ N) - O = {x ∈ R | 1 < x < 4 ou x > 6}