数列极限的问题
your idea is correct. The theorem and "数列An收敛的充要条件是 An的任何不平凡子列都收敛" imply 数列 {Zn} = {x1, y1, x2, y2, x3, y3, ...} 收敛 ==> 数列 {wn} = {x1, y2, y3, x4, y5, ... } 收敛 since {wn} 是 {Zn} 的子列.
答:x0处连续. 2.如果f(x)是闭区间[a,b]上的连续函数,那么f(x)在闭区间[a,b]上有最大值和最小值. 3.若f(x)、g(x)都在点x0处连续,则f...详情>>
答:详情>>