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Differentiate y to get: dy/dx = 7-3x^2 , dy/dx = 0 , therefore x=(+/-)sqrt(7/3) d^2y/dx^2 = 6x , substitute x values in to y=7x-x^3 and d^2y/dx^2 to find coordinates and the type of the stationary point.<...

The first lexical device Burns explores is repetition. This is a key method in rhetoric because it establishes importance, and ensures the reader pays attention to the word repeated. The word "red&qu...

For GCSE and A-Level there is a somewhat similar structure to an answer, however it depends on the mark scheme and the Assessment Objectives which need to be covered.

For A-Level it is important to...

In AQA Law A Level, for units 2, 3 and 4, you will be asked a scenario question. To ensure you get the best grade you can, you need to answer the question in a specific way. First, you need to have a good...

The correct approach to this question is to use the Le Chatelier's principle, which states that when you change conditions of a system at equilibrium, the system counteracts the change - a new equilibrium...