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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 =...

There are many methods of expanding quadratic equations, however there is one method which I find to be far easier than the others. This method is called the "box method", and allows this to be ...

This question asks us to multiply 2 decimal numbersThe steps involved with this question include:Step 1) Manipulate the numbers we are working with to give us an easier calculation.Step 2) Once we have do...

QuestionThe average temperature in May is 18 ºC.The average temperature in November is a third of the average temperature in May.The average temperature in September is twice the average temperature in No...