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Firstly we need to rearrange this equation so that it contains only one trigonometric function of x (i.e. tanx, cosx or sinx) which will make it much easier to solve.

We can do this in th...

The key to any Paper 1 question is to organize your answer in a manner which makes you examiner feel like they're on cloud nine. Remember, your examiners go through a number of papers, which means that...

We can imagine our function as a curve. We have x values on the x axis and f(x) values on the y axis of our graph. 

The question is essentially asking us to find the area between the curv...

Sadly, we can't all go to France on holiday to polish up our French...

A way of learning vocabulary that I have found very useful and also enjoyable is to listen to songs and the radio in...

Expand (1+0.5x)4 , simplifying the coefficients. Step 1. Draw Pascal's triangle to find the coefficients       1 ;  1  2  1 ; 1  3  3  1 ; 1  4  6   4  1. As you can see, each row starts ...