Inflection Point Detection

[aegreen]

Can't seem to figure this out but I assume it's a common problem.

I have a data set that contains an inflection point between two linear
equations. For example producing a graph as follows:

  ^
   |              /
y |             /
   |_______/
   |
<------------------> x
   |
   |

Has any one had success or knows of a technique to use octave to determine
the inflection point in this line?

Thanks,

AG

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