| 单词 | growth rate |
| 释义 | growth rate The proportional or percentage rate of increase of any economic variable over a unit period, normally a year. If a variable measured over discrete time intervals grows from 1 to 1 + x, this is a proportional growth rate of x, or a percentage growth rate of 100x. If working in continuous time, a continuous growth rate g means that a variable grows from 1 at time 0 to egt at time t. If yt = y0 egt, dyt /dt = gy0 egt, and (dyt /dt)/yt = g. As ln(yt) = gt, d[ln(yt )]/dt = g; the rate of change of the natural logarithm of any variable equals its growth rate. See also: natural growth rate, warranted growth rate |
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