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.

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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
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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