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Extracted from Cambridge International Examinations / MATHEMATICS 9709/11 Paper 1 Pure Mathematics 1

(7 points out of 10 for this question)

A line has equation y = 2x + c an...

To differentiate this kind of expression you would need to use implicit differentiation. 

Although it may sound new, you already have all the skills you need to be able to do it. We will ...

Induction is an incredibly powerful form of proof. As such, it is essential to be able to call upon such a tool if you want to study any higher form of mathematics.
The basic structure of the method ...

The imperative is used to give order or instructions to the person(s) you are talking to.

The impersonal form of the imperative is conjugated like the form you.

¡Canta tú! ¡...

Exam pressure and extreme stress stop our brains working effectively, so the best way to ace the oral and writing exams is to trick yourself into feeling confident and calm. This is actually easier to ach...