Mar 3, 2016 · For the other way around, let x ∈ (AUB)'. Use a proof by contradiction to show that x must also be in A'UB'. Assume x∉A' which implies or some r>0, there is Br (x) ⊂ A, where A is …

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Oct 21, 2016 · If A and B are a subset of C. I know it's true by showing examples but how is it proved?

Note that the function P P is the probability of an event happening. From the third axiom, we are given that for any two disjoint sets, that is A ∩ B = ∅ A ∩ B = ∅:

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The union of two sets A, B is the set AUB. Prove that if A and B are nonempty bounded subsets of R, then AUB is bounded and supAUB = max {supA, supB}.

Apr 24, 2020 · P (AUB)表示的是A和B有任回何一个发生的概率，如果A,B相互独立，P (AUB)=P (A)+P (B)-P (AB)=P (A)+P (B)-P (A)P (B)。

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