b) lim 2cos

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.3: Algebraic Expressions
Problem 73E
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i dont know what to do with the radian for the x value. we are supposed to evaluate the limit.

b) lim 2cos
Transcribed Image Text:b) lim 2cos
Expert Solution
Step 1

The limit to evaluate has been given on the white board.

 

2cosx
lim
3
Step 2

As a first rule, let's see what happens to the expression if we straightway substitute the limiting value of x. 

The expression takes a deterministic value of 1/3. Hence, the value of the limit should also be same as 1/3.

2cos2 x
1
3
3
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