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In my experience the sure fire way to prove trig identities is by doing the following:
1) Assess the question e.g. is it obvious you're going to need a double angle or addition formula, can you see w...

There are a few different types of integration, the most common being Riemann integration.
Riemann integration allows you to find the area under the graph of a function between two points. Its...

The reason why we factorise quadratic equation is because it is a neater and simpler way of writing the expression. 

Example 1

If we wanted to factorise x^2 + 10 + 21 we must look at f...

1. The electrons/ Pi bonds are delocalised2. It is made up of six Carbons in a ring with two rings of electon density above and below the plane of the ring.3. It has a lower electron density than alken...

The introduction and conclusion of an essay ensure that your writing flows. To have a cohesive beginning and ending will leave a reader assured that what you have asserted in your essay is fully justi...