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This is a quadratic equation so there are two main methods you can use to solve it- factorising and completing the square.

My preferred method and the on...

The  easiest way to see this is with an example. So let us take the curve:

    x = cos(2t) ,  y = sin(t) with a point P where t = pi/6

The grad...

With this question the first thing to help you tackle it would be write the number as digits, i.e.Forty-seven thousand, nine hundred and eighty-three = 47,983Now, you want this number to the nearest thous...

While there are several ways to solve this, in this particular case I would favour the method of elimination. Since the value of y is the same and they have opposite signs, we can add the equations tog...

Since an x² is produced, we know that the factorised version will be (x+a)(x+b). To find a and b we need to consider the relationship between 2 and -8. It is going to be factorised into two brackets, d...