Let f(x) =1/(1+x2)
(a) Prove that f(x) is continuous at any a ∈ R.
(b) If e = 0.1 and a = 10, find a 6 that satisfies the definition of continuity. Do the same
for a = 50 and a = 100.
(c) Recall from the in-class portion of Exam 2 that you proved that g(x) = 3x + 5 is continuous at any a ∈ R. For ε = 0.1 and a = 10, find a δ that works. Repeat for a= 50 and a = 100.
(x2-3x+2 1. (10 marks) Let f(x) if x # +1 (x2-1) с if x = 1 Find c that would make f continuous at 1. For such c, prove that f is continuous at 1 using an ε - 8 proof.
Let fx=x2-x-2(x2-4) if x≠±2c if x=2 Find c that would make f continuous at 1. For such c, prove that f is continuous at 1 using an ε-δ proof. x2-x-2 с 1. (10 marks) Let f(x) = (x2-4) if x # +2 if x = 2 Find c that would make f continuous at 1. For such c, prove that f is continuous at I using an E-8 proof.
Please Answer 135 Below Completely: Definition Let E-R and f : E-+ R be a function. For some p E E' we say that f is continuous at p if for any ε > 0, there exists a δ > 0 (which depends on ε) such that for any x E E with |x-Pl < δ we have If(x) -f(p)le KE. This is often called the rigorous δ-ε definition of continuity. A couple of things to note about this definition....
Format requirement: Question 3. E-6 Proof (Show Working) 10 points 249 Show that f:RR defined by f(x) is continuous at x = 7 using only r +3 cosa the epsilon-delta definition of continuity. Note that we want you to do it the hard way: you are not allowed to use the limit laws or the combination of continuous functions theorem or similar. You must give an 'e-δ style proof Solution: Let ε > 0 be given and choose δ =...
definition of continuity to prove that f : (0,00) by f(x)-13 + 1 is continuous at every Zo 0. Use the є-ð definition ) Use the є- R defined that g(x)-_a_ is continuous at every a є (-1,00) +1
Let f:D + R be a function. (a) Recall the definition that f is uniformly continuous on D. (You do not need to write this down. This only serves as a hint for next parts.) (b) Use (a) and the mean value theorem to prove f(x) = e-% + sin x is uniformly continuous on (0, +00). (c) Use the negation of (a) to prove f(x) = x2 is not uniformly continuous on (0,0).
x-x-2 if x # +2 1. (10 marks) Let f(x) = (x2-4) if x= 2 Find c that would make f continuous at 1. For such c, prove that f is continuous at 1 using an e-8 proof. -- с x-x-2 if x # +2 1. (10 marks) Let f(x) = (x2-4) if x= 2 Find c that would make f continuous at 1. For such c, prove that f is continuous at 1 using an e-8 proof. -- с
6. Given the following function -x-1,if x <-1 f(x) = {x2 - 1,1f-1sxS1 x+1, if x>1 e. Plot the function f(x) f. What is the maximum set on the real numbers where f is continuous ? Explain your answer. g. Is f is continuous at x = -1? If your answer is yes, then prove it by the definition of continuity. If it's no then explain clearly why?
(10 marks) Prove that fx=6ln(x-11) is not uniformly continuous on (0,∞) Х Enable Editing X i PROTECTED VIEW Be careful—files from the Internet can contain viruses. Unless you need to edit, it's safer to stay in Protected View. LAAM Yuuuus = (x2-x-2 1. (10 marks) Let f(x) (x2-4) if x # +2 с if x = 2 Find c that would make f continuous at 1. For such c, prove that f is continuous at 1 using an ε -...
definition of limit to prove that lim ,-e3. 3, (a) Use the - (b) Suppose lim g(z) 0 and if(x)| |g(z)| for all z E R. Use the ε-δ definition of limit to prove that lim f(x)=0 definition of limit to prove that lim ,-e3. 3, (a) Use the - (b) Suppose lim g(z) 0 and if(x)| |g(z)| for all z E R. Use the ε-δ definition of limit to prove that lim f(x)=0