for x rational f(x) = for x irrational

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter4: Polynomial And Rational Functions
Section4.6: Rational Functions
Problem 91E
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Show that f is a discontinuous function for all x, where f (x) is defined as follows:

Show that f 2 is continuous for all x.

for x rational
f(x) =
for x irrational
Transcribed Image Text:for x rational f(x) = for x irrational
Expert Solution
Step 1

Here given function as

fx=1for x rational-1for x irrational

Also 

f2x=fx·fx

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