how to find the area under a graph
 

i need help in finding the area under the graph in excel as it is a
complicated curve for the pressure vs volume of a combustion chamber


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chogga
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How does your curve look like please?

"chogga" wrote:


i need help in finding the area under the graph in excel as it is a
complicated curve for the pressure vs volume of a combustion chamber


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chogga
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See
http://www.stfx.ca/people/bliengme/E...UnderCurve.htm
for a couple of simple approaches to numerical integration.

If you know the formula for the curve, you might try integrating it
analytically. Similarly, you could integrate a polynomial (or other)
approximation to the curve.

Jerry

chogga wrote:

i need help in finding the area under the graph in excel as it is a
complicated curve for the pressure vs volume of a combustion chamber