convex function

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convex function

[′kän‚veks ′fəŋk·shən]
(mathematics)
A function ƒ(x) is considered to be convex over the interval a,b if for any three points x1, x2, x3 such that a <>x1<>x2<>x3<>b, ƒ (x2)≤ L (x2), where L (x) is the equation of the straight line passing through the points [x1, ƒ(x1)] and [x3, ƒ(x3)].
References in periodicals archive ?
The experiment found that, though the group exposed to varying quantities of light did have relative spikes in pressure output, it graphically spiked initially and rotated between concave upward and concave downward with respective exposure to light and to no light.
Mammalia, Chiroptera and Rodentia in Texas are skewed to the right and concave upward.
A shape of 1 produces a straight line, while a number greater than 1 produces a concave upward curve and a number less than 1 produces a convex upward curve.