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If we apply a function and then its inverse, we should get back to where we started. Suppose we start with an element x. If we apply f to it, we get to x+2. In order to get back to where we started (i.e. x),...

This is often overlooked as no-one gives a reason to why this is and is often stated as a fact. We start off with the basic indice law of x y * x z = x y+z . For example, Likewise with division, you can have...

As often described, a vector is a quantity that has a magnitude and a direction, whereas a scalar just has a magnitude. The easiest way to thing about it is to physically think if you could point in a direct...

This is a wide-ranging question and should be considered carefully. The words 'to what extent' mean that you need to explore both how the wars did AND how they did not change the status of women in Britain, ...

In French, the imperfect is used to describe a scene (il FAISAIT beau), to say that you did something regularly in the past (je MANGEAIS un burger toutes les semaines) or to describe a continuous action in t...