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Intersection of an equation and discrete points. 
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#1
Mar2614, 06:19 AM

P: 78

How do you calculate the intersection of discrete data points and an equation?
Actually I have two ways already, one is to just take the equation of the discrete points then solve it using a rootfinding technique. The other would be substituting the x values of the discretized points to the equation, then comparing the y values of the discretized points and the calculated y values from the equation; they should be close (if not totally similar). While this method seems to work, it isn't... exactly possible in my situation. Is there any other way to do this? 


#2
Mar2614, 07:23 PM

P: 1

When I faced this problem, I used the rootfinder implemented in programs like Mathematica, matlab, etc. This way is very easy and pragmatic. This is the link for FindRoot coomand in Mathematica. http://reference.wolfram.com/mathema.../FindRoot.html



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