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In the mark scheme at English A level, there is often reference to 'form' (e.g. context, letters vs novels), 'structure' (the order in which ideas emerge in the passage) and 'language' (the use of specific w...

A nerve cell when at rest is negatively charged, this means that on the inside it is more negative than on the outside. The potential difference is around -70mV. The mechanism that helps to achieve that pola...

sin2x = 2sinxcosxcos2x = cos 2 x - sin 2 x=2 cos 2 x - 1= 1 - 2sin 2 xtan2x = (2tanx)/(1-tan 2 x)

Writing a good conclusion is one of the hardest parts of an essay. Remember that the conclusion is the last impression you give an examiner, so it's very worth putting in extra effort and thought, even under...

The first thing when seeing such a question is to find out what the question wants you to do and plan your method to do so.In this case, the question asks you to find the normal of a curve at a given point (...