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A critical commentary is a close reading of a passage of a text. You will need to explain the main features of the passage and analyse the kind of effect it creates. It can be helpful to think of a critic...

Notes; *Stationary (Turning) points are the points on the graph which are lowest or highest. (maximum or minima). *The gradient at a stationary point is zero. Steps:  1. Differentiate the function once to...

find dy/dx, algebraically manipulate the expression to get dy/dx in terms of x and y and then subsitute in the given point. 

Some of your essay will be marked on content and therefore you need to present a balanced argument, giving justified reasons both for and against the topic being discussed. It is a good idea to offer a co...

Myleination of the nerve axon by Schwann cells allows for fast saltatory conduciton, as the Schwann cells provide electrical insulation. Gaps between Schwann cells are known as Nodes of Ranvier, whereby e...