Yes, and yes.

xnuke
"Live and act within the limit of your knowledge and keep expanding it to the limit of your life." Ayn Rand, Atlas Shrugged.
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I don't know if you can. I can.

Cheers

Greg Locock


New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?

Wikipedia can, too:

https://en.wikipedia.org/wiki/Trapezoidal_rule
https://en.wikipedia.org/wiki/Simpson%27s_rule
https://en.wikipedia.org/wiki/Numerical_integratio...

Now, you just need to decide what accuracy you need.

TTFN
I can do absolutely anything. I'm an expert!
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FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers

Thanks

Compute the area ABOVE the curve from the total area of the graph paper and subtract it.

Print the figure and cut out the area of the graph and weight it on a precision scale. Cut out a 1 cm by 1 cm piece of paper and weigh it also. Use the scale factor (gram crackers per square cm) to figure out the area under the curve.

Digitize the curve and fit it to a series of very small straight lines. Then integrate it using the ani-Cramer vs. Cramer rule.

Use the built in functions in Lotus 1-2-3 to compute the area and save it as a .csv file. Import that into Excel and the answer will be in the 'Answer' worksheet tab.

Double integrate the curve and take the first differential.

Use the lsqcurvefit function (Optimization Toolbox) to fit the digitized curve to a mass spring damper Simulink model. Then use an integrater to perform the calculation.

That's enough for now, my candlestick phone is ringing..