Search over 10,000 free study notes

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, to d...

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 create ...

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 you...

x 2 = 4(x-3) 2 x 2 = 4(x-3)(x-3) - showing that these are double bracketsx 2 = 4(x 2 - 6x + 9) - expanding the double bracketsx 2 = 4x 2 - 24x + 36 - multiplying the 4 by the expression inside to remove the ...

A free market is one where the price of the good or service is determined by the demand from consumers and the supply from producers. When there is excess supply within a market, it means that there is too m...