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Suppose we have two vectors U (a1,b1) and V (a2,b2). Hence, the distance between U and V will be given by the formula: d=sqrt((a1-b1) 2 + (a2-b2) 2 )

An unconsious action in response to a stimulus. These are very quick movements and have evolved to allow basic protection. For example, when you touch something hot, you automatically remove your hand before...

A synapse is the area between two nerve cells, allowing electrical impulses to be passed between them. In order to cross the gap from one neuron to another, the impulse gets converted to neurotransmitter - t...

The key to achieving excellent grades in A level is to make your essays as coherent as possible. In each essay you have, you should have a clear line of argument, e.g if you intend to argue to the following:...

A reduction in the base rate of interest means that the cost of borrowing money is cheaper and the reward for saving money is lower. Therefore, people are more likely to borrow money from banks and this lead...