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29-12-2008: 29th December 2008 14:43
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#3
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Exalted and Worshipped Member
Thread Starter
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Join Date: May 2008
Location: somerset
Posts: 982
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Re: edexcel core 2
Originally Posted by Swayum
Differentiation:
Turning points occur at dy/dx = 0. A function is increasing when f'(x)>0 and decreasing when f'(x) < 0. At a turning point, if f''(x) > 0, it's a minimum or if < 0, it's a maximum.
Integration:
To find the area under the curve: integrate to find an expression in terms of x and then plug in the two values of x in which the area lies between (note that you get a negative answer if the curve goes below the x-axis at any point, so take care of that) and subtract them.
That pretty much covers 98% of differentiation and integration (C2 style). The best way to revise, though, is to do as many questions as you can get your hands on (particularly solomon papers).
thank you 
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