- n. mathematics a point on a curve at which the sign of the curvature changes; at this point the second derivative of the underlying function will be zero, but positive on one side and negative on the other.
GNU Webster's 1913
- n. (Geom.) the point on opposite sides of which a curve bends in contrary ways.
“Figure 5-2b shows that the crucial variable to predict is the number of adopters from the time of the prediction to the mean time of adoption, when a point of inflection occurs in the diffusion curve.”
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