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While I doubt students will ask this exact question, think it provides the basis for what are usually the most difficult questions in GCSE papers, and students would usually be unsure where to start. My i...

First use the substitution to find du/dx which is 2x. From this we now know that dx= du/2x (just re-arranging.) Substituting that into the integral we now get (6x³+4x)/ (sqrt (u) x 2x) du. Canc...

Opportunity cost is the cost of sacrificing the next best alternative to the activity under consideration. In order to explain this I will use a literal example. You are going to watch a football match. T...

This question can be split into two parts, the first is calculating overall resistance: in series the R_total = R₁ + R₂ so here R_total = 10Ω + 20Ω = 30Ω The seco...

A personal statement is your way of expressing to the Universities of your choice your passion for your chosen degree, as well as explain how your experiences and knowledge are connected to it.Just like a...