11. Define f: R→ R by f(x) = 8x if x is rational and f(x) = 2x² + 8 if x is irrational. Prove from the definition of continuity that f is continuous at 2 and discontinuous at 1.
11. Define f: R→ R by f(x) = 8x if x is rational and f(x) = 2x² + 8 if x is irrational. Prove from the definition of continuity that f is continuous at 2 and discontinuous at 1.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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I need to prove using definition of continuity that f is continuous at 2 and discontinuous at 1. If you can't do it then please leave it for someone who can. I don't want to do it the other way, Thanks
![11 Define f: RR by f(x) = 8x if x is rational and f(x) = 2x² + 8 if x is irrational. Prove
from the definition of continuity that f is continuous at 2 and discontinuous at 1.
3.2 ALGEBRA OF CONTINUOUS FUNCTIONS
*12. Let p and q be polynomials and xo be a zero of q of multiplicity m. Prove that p/q can be
assigned a value at xo such that the function thus defined will be continuous there iff xo is a](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd597ffd2-5c4b-4c2e-8332-77ce1607dac1%2F5a7a588c-fbf9-4312-a1a0-138bc7b310e5%2F8czwobe_processed.jpeg&w=3840&q=75)
Transcribed Image Text:11 Define f: RR by f(x) = 8x if x is rational and f(x) = 2x² + 8 if x is irrational. Prove
from the definition of continuity that f is continuous at 2 and discontinuous at 1.
3.2 ALGEBRA OF CONTINUOUS FUNCTIONS
*12. Let p and q be polynomials and xo be a zero of q of multiplicity m. Prove that p/q can be
assigned a value at xo such that the function thus defined will be continuous there iff xo is a
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