Let (X, dx), (Y, dy) be metric spaces and fn be a sequence of functions fn: XY Prove that if {fn} converges uniformly on X then for any a є x lim lim fn()- lim lim /) xa n-00
Let (X, dx), (Y, dy) be metric spaces and fn be a sequence of functions fn: XY Prove that if {fn} converges uniformly on X then for any a є x lim lim fn()- lim lim /) xa n-00
10. Use the Fundamental Theorem of Calculus to provide a proof of Theorem 8.4 under the additional assumption that each fis continuous on I la, b).(Hint: For x in la, b.o)If f g uniformly on [a, b], then Theorem 8.3 implies that im f.(x) f (x8. It follows that frpuintwise on la, b), where F(x) -lim frCro) + .By Theorem 6.12, F()-x) on la,b). Now show that f uniformly on la, b].] F heorem 8.4 Suppose that neN is a...
Analysis:
Give two examples where if fn does not converge to f uniformly
on E, but does converge to f pointwise on E, then the following two
theorems do not hold. Write clearly and explain and proof your
claims.
711 Theorem Suppose fn→f uniformly on a set E in a metric space. Let x be a limit point of E, and suppose that (15) Then (A,) converges, and (16) lim f()im A In other words, the conclusion is that lim...
part (c)
7.23. Let y(x) = n²x e-nx. (a) Show that lim, - fn(x)=0 for all x > 0. (Hint: Treat x = 0 as for x > 0 you can use L'Hospital's rule (Theorem A.11) - but remember that n is the variable, not x.) (b) Find lim - So fn(x)dx. (Hint: The answer is not 0.) (c) Why doesn't your answer to part (b) violate Proposition 7.27 Proposition 7.27. Suppose f. : G C is continuous, for n...
Please answer it step by step and Question 2. uniformly
converge is defined by *f=0* clear handwritten,
please, also, beware that for the x you have 2 conditions , such as
x>n and 0<=x<=n
1- For all n > 1 define fn: [0, 1] → R as follows: (i if n!x is an integer 10 otherwise Prove that fn + f pointwise where f:[0,1] → R is defined by ſo if x is irrational f(x) = 3 11 if x...
Suppose that fn(x) converges to f(x) uniformly, that the functions fn(x) are all differentiable, and that the function f(x) is also differentiable. (All of these conditions are assumed to be true on a bounded, closed interval [a, b].) Prove or disprove: lim as n goes to infinity fn'(x) = f'(x)
PLEASE ANSWER Q9 N Q10
5.2 Interchange of Limits and Integrals/ Derivatives 9) Calculate n cos lim -dr, 2n sin2 J2 justifying your calculation 10) Let 2nx fn(x) 1 +n2z2E0, 1], n > 1. Show that (fn) converges pointwise, but not uniformly, on [0,1] (b) Show that nevertheless, fa(a)d lim fa(a)dx. lim (This shows that the hypotheses of Theorem 5.8 are sufficient, but not nec- essary, for interchanging limits and integrals.)
Proposition 7.27. Suppose fn: G + C is continuous, for n > 1, (fn) converges uniformly to f :G+C, and y C G is a piecewise smooth path. Then lim n-00 $. fn = $. . 7.23. Let fn(x) = n2x e-nx. (a) Show that limn400 fn(x) = 0 for all x > 0. (Hint: Treat x = O as a special case; for x > 0 you can use L'Hôspital's rule (Theorem A.11) — but remember that n is...
help me solve 24.11
24.11 Let fn(x) = x and gn(x) = 7 for all x € R. Let f(x) = x and g(x) = 0 for x E R. (a) Observe fn + f uniformly on R (obvious!) and In + g uniformly on R (almost obvious]. (b) Observe the sequence (fron) does not converge uniformly to fg on R. Compare Exercise 24.2. 24.2 For x € [0,00), let fn(x) = (a) Find f(x) = lim fn(x). (b) Determine...
- Let fm (x)= 7* (0<x< 1). Show that { {m} -, converges pointwise on [0, 1]. If f(x)= lim fn(x) (0<x< 1), is there an N EI such that In(x)-f(x)}< (n>N) for all x € [0, 1] simultaneously?