18 January, 2012

EX 2: Types of Intervals

3 comments:

  1. are there instances where the arrow is to the left of the infinite one?

    ReplyDelete
  2. This comment has been removed by a blog administrator.

    ReplyDelete
  3. The infinity sign is usually place in the direction where the arrow is pointing either (negative or positive direction), it depends on how the question is structured.

    ReplyDelete