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Waterfalls are found in the upper course of the river where a harder, more resistant band of rock sits on top of a softer, less resistant band of rock. The softer rock is more easily eroded, so it wears a...

u² = 2 + xx = u² - 2dx/du = 2u
ʃ x(2 + x))^1/2 dx= ʃ xu dx= ʃ u(u² - 2) dx= ʃ 2u² (u² - 2) du= ʃ 2u⁴ - 4u² du= [...

History naturally is a difficult subject even at GCSE in terms of remembering a huge amount of names and dates. However, I would reassure the student. I would guide them through revision techniques that o...

I would firstly ask them how much they knew about trigonometry, and then guide them through the SoHCaHToA theory. I would use diagrams for this. I would then ask them to spot any ways they could work out ...

The main difference between GCSE and A-level is the structuring of your essays and the sophistication in which you approach your answers. Instead of giving, for example a for and against answer to a yes o...