题目
多项选择题
If function f has a removable discontinuity at x=7, then which of the following statements must be true?
选项
A.The function has an infinite limit at x=7.
B.The limit of f at x=7 does not exist.
C.f(7) is undefined.
D.f(7) is defined.
E.The limit of f at x=7 exists.
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思路分析
Consider the concept of a removable discontinuity at x = 7.
Option 1: The function has an infinite limit at x=7. This is not correct, because a removable discontinuity involves a finite limit that exists as x approaches the point; an infinite limit would correspond to a different type of discontinuity (infinit......Login to view full explanation登录即可查看完整答案
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