Code for finding extrapolated value when two point are given?

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there are two point A (x1,y1)and B(x2,y2) given trying to extrapolate at third point c(x3,y3). I am knowing the value of A(x1,y1) and B(x2,y2), How can I compute the value of C(x3,y3).

Answers (2)

the cyclist
the cyclist on 14 May 2013
You can use the MATLAB function interp1() to do extrapolation. Read
doc interp1
for details.
Be careful. Extrapolation is a tricky business.

Walter Roberson
Walter Roberson on 14 May 2013
interp1()
Or just use standard geometry... y = m*x + b, m = (y2-y1)/(x2-x1)

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