2017年3月9日 · Why is “A only if B” equivalent to “(not A) or B”? Let's make it less abstract: A = You can have your pudding

2016年9月18日 · Looking at the truth table, they're equivalent: A B (A+B) (A+A'B) ----- 1 1 1 1 1 0 1 1 0 1 1 1 0 0 0 0 But . $\begingroup$ By A' you mean not A?I personally never ...

2014年6月22日 · A friend and I recently got into a silly argument where I stated A = B so B = A. He stated this was not always true. After asking for an example he stated. Jacuzzi = Hot Tub …

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2019年7月3日 · You are right! Straight-forward, direct from definition proof! Sometimes, when we talk about this "advanced" mathematical subjects, we expect proofs to be long, complex and …

2015年3月20日 · I'm struggling to get to grips with the Triangle Inequalities. The problem is I don't really understand what it means. This is what my lecturer has written in the notes: $$ …

(A⊕B) = (A ∪ B) a true statement? Is it true sometimes, never, or always? If it is sometimes, state the cases where it is." How would you go about finding the answer to the question or ones like …

2018年4月9日 · A ∩ B = A ∩ B. I think this proof is close to correct. I was confused with the last part but it seems ...

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2019年1月18日 · (A⊕B)⊕B=A . ⇒ x∈(A⊕B)⊕B = x∈(A⊕B) xor x∈B = (x∈A xor x∈B) xor x∈B. x∈B → x∉A or x∉B (contradiction) x∈A → x∉B or x∉B (works) I find this incomplete as we only …