| 单词 | concave function |
| 释义 | concave function [`kän´kāv `fǝŋk·shǝn] MATHEMATICS A function f (x ) is said to be concave over the interval a,b if for any three points x1, x2, x3 such that ax1x2x3b, f (x2)≧L(x2), where L(x ) is the equation of the straight line passing through the points [x1, f (x1)] and [x3, f (x3)]. |
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