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To find stationary points, we need to find dy/dx and set it equal to 0. Here we must use implicit differentiation: d/dx(x²) + d/dx(-xy) + d/dx(y²) = d/dx(12). Hence 2x - x(dy/dx) - y...

The nucleus contains positively charged protons which attract the negative electrons, the first ionisation energy is the energy required to overcome this attraction and remove 1 electron As you go down a ...

I will prepare various questions based on their personal statement, and depending on if the interview they are preparing for is MMI or panel style, I will prepare several stations each looking for differe...

In my revision for my English Lit A Level, I used quote banks to organise my ideas and make essay planning more efficient. These are tables in which the left side shows themes within the text and the top ...

To make it easier for you to keep hold of your ideas, you can summarise your points in your introduction. For example, if I was writing an essay about Christmas, I might say; 'In order to explain what Chr...