. Consider the function f: R→ [0, 1] defined by f(x) = 1 if x is rational, and f(x) = 0 if * is irrational. For which values of a € R does lima f(x) exist? At which values of a € R is f continuous?

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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Consider the function ƒ : R → [0, 1] defined by f(x) = 1 if x is rational, and f(x) = 0 if
* is irrational. For which values of a € R does limx→a f(x) exist? At which values of
a E R is f continuous?
Transcribed Image Text:Consider the function ƒ : R → [0, 1] defined by f(x) = 1 if x is rational, and f(x) = 0 if * is irrational. For which values of a € R does limx→a f(x) exist? At which values of a E R is f continuous?
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