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a^m+n

let u = sin(x) and v = cos(x) => z = u/v. The quoitent rule is (u'v - v'u)/v^2, where u' = du/dx, v' = dv/dx. In this case du/dx = cos(x) and dv/dx = -sin(x) => u'v = cos^2(x) and v'u = -sin^2(x) =&...

First of all, don't panic with critics. Not only are they usually not the highest weighted part of the mark scheme, but they are supposed to be included at A level in your answers to show...

To answer this question, students could talk about a whole range of issues relating to dialect, lexical choices, and people's attitudes towards certain regional variations of English. Where we come from a...

A key strength of Sherif's 1954 'Robber's Cave' study is that it has high validity. Sherif's experiment was set up as a two week long summer camp with participants who were not aware of the aim of the stu...