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You might be tempted to start by expanding the brackets, but in this case it's much easier to use the chain rule. This is the rule that, to differentiate f(g(x)), we find f'(g(x))*g'(x). In other words, t...

The two most important things to consider when analysing a source are provenance and content. Provenance means where the source comes from, so ask questions like, who created the source? Why did they crea...

First of all, it's really important not to panic. Take a second and think about what you are going to say before rushing into an answer. Make sure your answer is not too short, the examiner wants to hear ...