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There are several ways we can rearrange algebraic formulae in order to change the subject. Changing the subject basically means changing the variable (letter) that we are trying to find out, so getting th...

Here are just a few general tips to produce a strong essay. --- Read the question a few times before starting and make sure you understand what it is asking and how to best answer it - underlining key wor...

To gain your AO3 marks in a GCSE English exam, you must show your understanding of the context in which the text was written. To understand the established context of a piece of literature you need to ans...

Write y = x^xln(y) = xln(x)1/y dy/dx = (1+ln(x)) by applying the chain rule to the LHS and product rule to the RHSdy/dx = y(1+ln(x)) Rearranging dy/dx = x^x (1+ln(x)) Substituting y=x^x into the equationN...

The easiest way to do this is to notice that f(x-2) is just f(x) translated by two in the positive x-direction - it is not necessary to calculate what f(x-2) is at any point!
So we calculate f'(x) =...