Dados os conjuntos a seguir, determine o que sepede: a) A = [2, 4] e B = [3, 6]: A intercessão B, A U B e A - Bb) A = {X E IR | X <4} e B = {X E IR

a)

\[A = [2,4] \ \ B=[3,6]\]

\[\eqalign{&A \cap B = [3,4] \\& A \cup B = [2,6] \\& A - B = [2,3)}\]

b)

\[A = \left\{ X \ \ \epsilon \ \ IR \ \ | \ \ X <4 \right\} \ \ \ \ B = \left\{X \ \ \epsilon \ \ IR \ \ | \ \ X <1\right\}\]

\[\eqalign{&A \cup B = A = \left\{ X \ \ \epsilon \ \ IR \ \ | \ \ X <4 \right\} \\& B \cap A = B =\left\{X \ \ \epsilon \ \ IR \ \ | \ \ X <1\right\}}\]

c)

\[A = (-2, 0) \ \ \ \ \ \ \ B = [-1, +\infty)\]

\[\eqalign{&A \cup B = (-2, \infty) \\& A \cap B = [-1,0)}\]