Chapter 8
Evaluating Limits
IN THIS CHAPTER
Algebra, schmalgebra
Calculators — taking the easy way out
Making limit sandwiches
Infinity — “Are we there yet?”
Conjugate multiplication — sounds R rated, but it’s strictly PG
Chapter 7 introduces the concept of a limit and goes over the theoretical limit stuff. This chapter gets down to the nitty-gritty techniques for calculating the answers to limit problems. Here you practice two main methods for solving limit problems: using your calculator and using algebra.
The calculator techniques are useful for a few reasons: 1) You can solve some limit problems on your calculator that are either impossible or just very difficult to do with algebra, 2) You can check your algebraic answers with your calculator, and 3) Limit problems can be solved with a calculator when you’re not required to show your work — like maybe on a multiple-choice test. (Of course, depending on your teacher and depending on the situation, you may not be allowed to use ...
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