teresajohnson6592 teresajohnson6592

03-05-2018
Mathematics

contestada

Suppose a ⊆ c, and b and c are disjoint. prove that if x ∈ a then x ∈/
b.

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LammettHash LammettHash

03-05-2018

If [tex]x\in A[/tex], then clearly [tex]x\in C[/tex]. We're given that [tex]B[/tex] and [tex]C[/tex] are disjoint, so no element in [tex]C[/tex] is also in [tex]B[/tex]. This means [tex]x\not\in B[/tex].

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