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This is a question I commonly use when giving interview practise for potential Oxbridge students. A question like this doesn't have to have a corrrect answer necessarily, but should evoke a discussion and...

Luckily, there is an easy way to remember which verbs take 'être' and which take 'avoir' in the perfect tense. You just need to learn the following acronym:

M - mourir

R - retourner

S...

A neurones role is to transmit electrical impulses rapidly around the organisms body so that the organism can respond to changes in both their external and internal environments. Their structure consists ...

By taking the natural log on both sides we can see that: ln(f(x)) = ln(x)^2 This is a more familiar expression that we know how to differentiate  LHS: f '(x)/f(x), RHS: 2*ln(x)/x By re...

First differentiate y with respect to x, which gives you dy/dx = 8 - 2x^-2. This needs to equal zero so equate to zero. 8-2x^-2 = 0. You can then bring the 2x^-2 to the other side giving 2x^-2=8. Dividing...