| 单词 | bound |
| 释义 | bound A value which a given function cannot pass, and may or may not actually reach. A bound may be upper or lower. f(x) is bounded from above, by an upper bound b, if f(x) ≤ b for all x. f(x) is bounded from below, by a lower bound a, if f(x) ≥ a for all x. A given function may be bounded in both directions; for example Sin (x) has an upper bound of +1 and a lower bound of -1; in this case each is actually reached at particular values of x. |
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