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Mass spectrometry is a method of identifying the molecular mass of compounds by measuring its mass to charge ratio. Methods vary depending on the molecules being analysed, their phase, the wanted sample inse...

The key to succesfully passing geography at A2 is no longer the requirement to regurgitate information but the awareness of pressing topics and events occurring in the present. Extra wider reading around top...

The method of memorization has to be done via you figuring out a way to commit information to your memory, whether that be via writing them out repeatedly, condensing the essay into main points which you can...

If you look at the Taylor series expansion of e x: e x = 1 + x + x 2 /(2!) + x 3 /(3!) + x 4 /(4!)... If you then make this e ix , you get 1+ix - x 2 /(2!) - ix 3 /(3!) + x 4 /(4!)... If we split this into r...

The chain rule works so that if you have y=f(x)g(x), where f(x) and g(x) are functions of x, dy/dx = f'(x)g(x) + f(x)g'(x)