Hi, I have a quick question. What does the triangle (Δ) mean? I was asked to prove this, but since it's not told in the book and I just wana get an idea of what the Δ means.(adsbygoogle = window.adsbygoogle || []).push({});

Show that A Δ B^c = A^c Δ B

Also after trying to prove the two sides, I got stuck here...

For A Δ B^c =...=...=(A ∩ B^c) U (B^c ∩ A)

and for A^c Δ B =...=...=(A^c ∩ B) U (B ∩ A^c)

how do they equal?

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# Homework Help: Quick Help, Probability.

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