This video gives an explanation of how to work with GCSE mathematics iteration type questions, sometimes called 'iterative formula.' They can be extremely wordy ... but should be absolutely fine once you get the general idea. I'll post some additional videos, with similar questions, in the next few days. The question is aimed at GCSE maths grade 7+ calculator … [Read more...]

This video gives an explanation of how to work with iteration, sometimes called iterative formula. It's extremely wordy ... but should be absolutely fine once you get the general idea. I'll post some additional videos, with similar questions, in the next few days. The question is aimed at GCSE maths grade 7+ calculator paper. (a) Show that when f(x) = 0, the equation f(x) … [Read more...]

  This video is about how to work with an algebraic equation, which might be a useful skill - particularly if you are aiming to study maths at a higher level.  In this example, the equation needs to be manipulated to find the value of x and y. It looks a little tricky at first, but is fairly straightforward once you complete the expansion. The question is aimed at … [Read more...]

 This video is a fairly popular example of solving simultaneous equations, by substitution, in circles and straight lines. The question asks you to calculate the intersects (where the perimeter and straight line cross each other): The question is aimed at around grade 7+ GCSE maths: Find the coordinates of the points where line y + 5 = 3x intersects the circle x² + y² … [Read more...]

This video is all about finding the area of a trapezium, and using the equation to calculate the value of x. The question is aimed at around grade 7+ GCSE maths, and is generally non calculator: "ABCD is a trapezium with AD = x+8, BC = x+5 and AB = x. The area of the trapezium is 42cm². Show that x is a square number" The easiest way is to use the formula area = … [Read more...]