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To show something is a subgroup we need to show that it satisfies the group axioms. Therefore we need to show that if g and h are in Z(G) then gh is in Z(G), g^-1 is in Z(G), the identity e is in Z(G). As eg...

Aside from the obvious introduction and conclusion, the way that's worked the best for me is a focus on four basic elements of the poem (or any text being studied), with a paragraph on each: form, structure,...

Graphite and Diamond are different because they have different structures. Both have Giant Covalent Structures, resulting in very high melting temperatures. However each carbon atom in Diamond has 4 covalent...

So, six mark questions are notorious for being anxiety inducing but they aren't as scary as they seem. What we as a pair have to do is simply sit down together and go through all the possible six mark questi...

one word: TRIAGE. You have to assess which questions are too time-consuming and not worth spending your precious seconds on. It's always best to guess at a very time-consuming question in order to correctly ...