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One of the hardest but most important things to get to grips with when writing an essay is to be able to talk about language and form. It is important to talk about some aspect of this at least once in or...

Integration by parts is used to integrate a product of functions. The formula is as follows:

Int[f(x)g'(x)] = f(x)g(x) - Int [f'(x)g(x)]

Price discrimination is where firms charge a different price to different consumers for the same good for reasons other than cost. There are three degrees. First degree PD is where the seller knows the...