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The main difference is that order of objects matters for permutations. Both involve choosing k objects from a group of size n. Permutations are used to ...

Students may discuss how men and women use language 'differently', by analysing a text in a number of ways. Students may examine differences in the following areas of language: lexis and semantics (the vo...

The left ventricle has a thicker muscular wall and therefore produces stronger contractions.

It's very important to maintain the optimum body temperature in mammals, in particular in relation to enzymes and enzyme controlled processes. There will be the optimum temperature for enzymes where they ...

divide through by 2x to get: dy/dx + 2y/x = 4x         this is now in the form of dy/dx + P(x)y = Q(x)

intergrating factor = exp( integral(P(x)) dx ) = exp( integr...