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Trapezium Rule

Formula of area of a trapezium=½(a+b)h
The formula to work out the area under a curve is:
Note: the small numbers show which line you are referring to, in the below
example, y0 is at x=0, y1 is at x=1.

Worked example

Divide into

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Therefore the area under the curve is roughly 22, however this is not accurate
because there are only 4 trapeziums: to increase accuracy, increase n (the
number of lines).


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