6 Let f: D-R be a function. If f is continuous at CED then Ifl is...
6. Let f be a continuous function on R and define F(z) = | r-1 f(t)dt x E R. Show that F is differentiable on R and compute F'
Answer C 6. Let f be a continuous function on [0, oo) such that 0 f(z) Cl- for some C,e> 0, and let a = fo° f(x) da. (The estimate on f implies the convergence of this integral.) Let fk(x) = kf(ka) a. Show that lim00 fk(x) = 0 for all r > 0 and that the convergence is uniform on [8, oo) for any 6> 0. b. Show that limk00 So ()dz = a. c. Show that lim00 So...
I. Let f : R → R be a continuous function. Show that ER sup is a Fo set I. Let f : R → R be a continuous function. Show that ER sup is a Fo set
4. Let S be the set of continuous function f: [0;1) ! R. Let R be the relation defined on S by (f; g) 2 Rif(x) is O(g(x)). (a) Is R reflexive? (b) Is R antisymmetric? (c) is R symmetric? (d) is R transitive? Explain your answer in details. Use the definition of big-O to justify your answer if you think R has a certain property or give a counter example if you think R does not have a certain...
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).
Construct a continuous function f : D -> R which is bounded and does not attain 6. its maximum, if D = Bi(0) C R2. Can one construct such a function in the case of the close ball D B1(0)? Construct a continuous function f : D -> R which is bounded and does not attain 6. its maximum, if D = Bi(0) C R2. Can one construct such a function in the case of the close ball D B1(0)?
Let the function f: (a, b) → R is continuous in (a, b). If sup {f(x): x ∈ (a, b)} = L> 0 and inf {f(x): x ∈ (a, b)} = M <0, then prove that there is a c ∈ (a , b) such that f (c) = 0.
(Limit of functions) Let f : 2-» C be a function, and assume that D(a, r) C Q. We say that lim f(z) L Ď(a, 6) we have |f(z) Ll < e. if for any e > 0 there exists 6 > 0, such that for any z e (a) State the negation of the assertion "lim^-,a f(z) = L". (b) Show that lim- f(z) L if and only if for any sequence zn -» a, with zn a for...
Logic (a) Let f : [a, b] → R be a continuous function. Prover that there exists ce [a, b] such that con la silany - be a criminatoria per le sue in elan 5(e) = So gladde (b) Define F:R+R by F(x) = [** V1+e=i&t. Prove by citing the appropriate theorem(s) that F is differentiable on R, and calculate F'(c). Be sure to justify your reasoning at every stage.
with respect to the partitionl0, 21,12,* 1I,o1F. Let f : DC R" - R, where D is bounded and f is continuous on D on D. Show that f is Riemann integrable on D R-R where f is hounded and as constant. Evaluate the 시 with respect to the partitionl0, 21,12,* 1I,o1F. Let f : DC R" - R, where D is bounded and f is continuous on D on D. Show that f is Riemann integrable on D R-R...