1.充分条件:(sufficient conditions) 只要有A,就一定能达成B,A是B的充分条件。有之必然 A sufficient condition (A) is a condition that will produce the event (B). 意为有A足够得到B 例:我早上去上课了(A),那么我早上一定起床了(B)。 早上去上课了(A)是早上起床(B)的充分条件。充分条件是只需要...
1.充分条件：(sufficient conditions)只要有A，就一定能达成B，A是B的充分条件。有之必然 A sufficient condition (A) is a condition that will produce the event (B). 意为有A足够得到B 例：我早上去上课了(A)，那么我早上一定起床了(B)。 早上去上课了(A)是早上起床(B)的充分条件。 充分...
首先，充分条件，即“有之必然”，意味着只要有A这个条件存在，必然会导致结果B。例如，如果早上去上课(A)，那么一定会起床(B)，这是充分条件的体现，因为即使不提到起床，上课的事实也足以推断出起床。在日常表达中，我们常用“如果……那么……”、“只要……就……”来描绘这种关系。然而，充分条件...
Examples p q ? . 1. p : a 2 > b 2 , q : a > b. 2. p : (x −2)(x −3) = 0, q : x = 2. 3. p : a b , q : a +b . 4. p : 0 < m < 1 3 , q : mx 2 −2x +3 = 0 . 1. . 2. . 3. . 4. . ( ) 4 / 16 Examples p q ? . 1. ...
摘要: Jiang (1988) gives a sufficient and necessary condition for the asymptotic stability of a discrete linear interval system. It is here demonstrated through counter-examples that the condition is not sufficient. The flaw leading to this erroneous result is also indicated....
Time, however, is notasufficient conditionforchange: teachers also need to have their current practice challengedandtobe supported as they make changes. unesdoc.unesco.org unesdoc.unesco.org 然而,值得注意的 是,时间并不是改变的充分条件,教师的现在教学实践要不断地受到挑战与支持,才 能实现改革。
Necessary and sufficient condition for the stabilization of the solution to the initial-boundary value problem for second-order nondivergence parabolic equ... Denisov, V.N., Martynova, A.A.: Necessary and sufficient conditions for the stabilization of a solution to the Dirichlet problem for ...
1)necessary and sufficient condition充要条件 1.The convex function and its necessary and sufficient condition;函数的凸性及其判别的充要条件 2.Another Two Forms of Necessary and Sufficient Condition of Differentiable Complex Function;复变函数可微性充要条件的另两种形式 3.Necessary and Sufficient Condition...
the number 23 does not end in 7 but is nevertheless not divisible by 2. A sufficient condition for the divisibility of a number by 2 is that it end in zero. This condition is sufficient but not necessary, since the number 38 does not end in a zero but is nevertheless divisible by 2...
We then prove that this necessary condition becomes sufficient when the state is one-dimensional. This is obtained by a classical series expansion of the input-output map. This condition is easy to check, as it is shown by the study of some examples, in which we do much less computation ...