Let ƒ be a function with domain R, and let a e R. Determine if the following statement is true or false. If lim f(x) = 00, then lim cos(f(x)) does not exist. If you believe it is false, provide a counterexample and explain why it works. If you believe it is true, prove it directly from the definitions of the statements involved (i.e., the definition of the first limit being infinity, and the definition of the second limit not existing).

College Algebra
1st Edition
ISBN:9781938168383
Author:Jay Abramson
Publisher:Jay Abramson
Chapter3: Functions
Section3.3: Rates Of Change And Behavior Of Graphs
Problem 2SE: If a functionfis increasing on (a,b) and decreasing on (b,c) , then what can be said about the local...
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(7) Let f be a function with domain R, and let a E R. Determine if the following statement is
true or false.
If lim f(x) = 0, then lim cos(f (x) does not exist.
If you believe it is false, provide a counterexample and explain why it works. If you believe
it is true, prove it directly from the definitions of the statements involved (i.e., the definition
of the first limit being infinity, and the definition of the second limit not existing).
Transcribed Image Text:(7) Let f be a function with domain R, and let a E R. Determine if the following statement is true or false. If lim f(x) = 0, then lim cos(f (x) does not exist. If you believe it is false, provide a counterexample and explain why it works. If you believe it is true, prove it directly from the definitions of the statements involved (i.e., the definition of the first limit being infinity, and the definition of the second limit not existing).
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