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From: metin on 8 May 2010 01:11
Stress vs. strain data for a composite material.
strain=[0 0.183 0.36 0.5324 0.702 0.867 1.0244 1.1774 1.329 1.479 1.5 1.56];
stress=[0 306 612 917 1223 1529 1835 2140 2446 2752 2767 2896];

Find the longitudinal modulus E using the regression model.sigma=E*epsilon

i must find only one E for all equations.how can i find the number provided for each value? can anyone suggest smthng? thx
From: David Young on 8 May 2010 06:19
The key is the phrase "regression model" in your question. If you google this, you'll find lots of references, e.g. on Wikipedia, that will show how to solve the problem. Once you've understood the maths, you will find that writing a program in Matlab is very simple.
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Prev: analyzing stock time series data.
Next: distance between two points along a curve