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This can be proven by understanding tan(x) and it's inverse as functions, using implicit differentiation, subsitution and by recognising trigonometric identities (or being able to prove them from first pr...

One of the main things to remember when it comes to an A Level English Language essay is that you have a completely different aim to when you are writing an English Literature essay. Whilst during Lit ess...

Firstly write out the equation x² - 9x + 20 = 0. The aim is to find two numbers that multiply to make 20 and add up to make -9. Look at the constant without any x's , in this case it is 20. We ...

A graph would be drawn to show a steady incline to an optimum temperature and then a sharp decrease after the peak.

As the temperature increases the enzyme and sustrate will have more kinetic energ...

It would be worked out by adding 4+6+10 to get 20 and then it would be number of yellow balls over total number of balls which would be 10/20. Depending on ability this may then be simplified down to 1/2....