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A turning point on a curve will be a point where the curve is flat/horizontal i.e. where it has a gradient of zero. We know that to find the equation for the gradient of a curve we have to differentiate i...

This is an example of a common Mechanics 1 question. I teach a systematic approach to such questions. 

1. Diagram - dram diagram of the pulley set up

2. Label forces on diagra...

Label the equations 1 and 2 We want to make it so the x are the same number - therefore we have to find a common multiple of 2 and 3 - this is 6 Therefore the equations turn into: 1) 6x + 10y = -8 2) -6x ...

We know that 17% is the same as 17/100 or 0.17 so we do 0.17*84 = 14.28.

A typical GCSE question will give you an equation in the from ax² + bx + c, x² - 8x + 15 = 0 for example, and ask you to solve the possible value of X. To do this we need to split th...