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This question tests a variety of mathematical techniques and knowledge which is integral to A-level mathematics.

Note that the highest power of a variable function in the mentioned equatio...

This question is a classic example of a problem which might catch some students out, if due care is not implemented.

Eleri is investing £3700 at 2% per annum compound inter...

I would always approach this type of question methodically in the same way each time to minimise panic in exams. 1. Collect the like terms together (10x = 10) 2.Divide to find the solution (x=10)

I tend to use rhymes to remember difficult maths formulas - it makes life so much easier! For example, "I never knew how much I cared that the area of a circle is πr²". 

Let y = tan(x)

Recall the definition of tan(x) as sin(x)/cos(x)

Therefore y = sin(x)/cos(x)

Use the quotient rule, which states that for y = f(x)/g(x), dy/dx =...