Limits with value infinity | Calculus (limits)
Many functions blow up at a point. 1/x is a prominent example. This video will give you a new tool for reasoning about functions which go to infinity at a point, either in the same direction on both sides, or to positive and negative infinity on either side.
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0:00 A 1-sided problem using calculator
3:11 Algebraic technique using +-
5:22 A 2-sided problem, left side
8:17 2-sided problem right side
10:13 Confirming results with a graph
12:03 Conclusion