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Trig Limits, Continuity, and Differentiability.notebook October 03, 2019
Some Limit Rules Before Beginning Trig Limits:
1. The limit of a constant is the constant
2. The limit of sum/difference is the sum/difference of the limits.
Oct 78:35 AM
3. The limit of a constant times a function is the constant times the limit of
the function.
4. The limit of product is the product of the limits.
5. The limit of a quotient is the quotient of the limits, provided the
limit of the denominator is not 0.
Oct 78:53 AM
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Trig Limits, Continuity, and Differentiability.notebook October 03, 2019
Limits of Trigonometric Functions
Before we begin, please make sure your calculator is in radian mode.
Ex 1: Evaluate
a. b.
Ex 2
: Are there any values of c for which or
does not exist? Explain.
Oct 51:53 PM
The Squeeze Theorem
If two functions squeeze together at a particular point, then any function
trapped between them will get squeezed to that same point.
The Squeeze Theorem deals with limit values, rather than function values.
In the graph below, the upper and lower functions have the same limit value
at x = a. The middle function has the same limit value because it is trapped
between the two outer functions.
Suppose f(x) < g(x) < h(x) for all x in an
open interval about a (except possibly at a
itself). Further suppose
Then,
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Trig Limits, Continuity, and Differentiability.notebook October 03, 2019
Ex 3:
https://www.khanacademy.org/math/apcalculusab/ablimitsnew/ab18/v/squeezesandwichtheorem
Ex 4
: Evaluate
a. b.
Hint: Graph it :)
These two limits will be used in conjunction with algebraic
manipulation to evaluate all other trigonometric limits
of the form 0/0.
Oct 52:04 PM
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Trig Limits, Continuity, and Differentiability.notebook October 03, 2019
Compute all the following limits without a calculator. (handout)
Ex 5:
Ex 6:
Ex 7:
Oct 711:31 AM
Ex 8:
Ex 9:
Ex 10
:
Oct 711:44 AM
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