*1. Let S2((x, y, z) e R3:xy+2 be the unit sphere and let A: S2 S,...
5. Let ф: S1 S2 be a diffeomorphism. a. Show that S is orientable if and only if S2 is orientable (thus, orientability is preserved by diffeomorphisms). b. Let S, and S2 be orientable and oriented. Prove that the diffeomorphism ф induces an orientation in S. Use the antipodal map of the sphere (Exercise 1, Sec. 2-3) to show that this orientation may be distinct (cf. Exercise 4) from the initial one (thus, orientation itself may not be preserved by...
Where And Exercise 6.5.28 Let S (z, y, z) e R3 1 z? + уг + z2-1,#2 0} be the upper hemisphere of the unit sphere in R3. For each of the following integrals, first predict what the integral will be, and then do the computation to verify your prediction 22. 222. 1U. JS Definition 6.5.9 Let S,T C(RT, R). The wedge product of S and T is the alternating bilinear form SAT : Rn × Rn → R given...
(1) Let G(,y, z) = (x,y, z). Show that there exists no vector field A : R3 -> R3 such that curl(A) Hint: compute its divergence G. (2) Let H R3 -> R3 be given as H(x,y, z) = (1,2,3). Find a vector potential A : R3 -> R3 such that curl(A) smooth function = H. Show that if A is a vector potential for H, then so is A+ Vf, for any f : R5 -> R (3) Let...
Let E be the solid that lies inside the cylinder x^2 + y^2 = 1, above the xy-plane, and below the plane z = 1 + x. Let S be the surface that encloses E. Note that S consists of three sides: S1 is given by the cylinder x^2 + y^2 = 1, the bottom S2 is the disk x^2 + y^2 ≤ 1 in the plane z = 0, and the top S3 is part of the plane z...
* Let φ : R3-+ R be a continuous function. The level sets of φ are the sets 4:-{(z, y, z) e R3 Id(z, y, z) =c); where c is a real constant (c) Use the setup in this problem to argue that a sequence on the unit sphere x E R31 (- is the standard Euclidean norm) cannot converge to a point that is not an element of the unit sphere. * Let φ : R3-+ R be a...
(2) Let f(z, y)-xy +x-y be defined on the closed disk {(z, y) E R2 : z? + y2 < 4} of radius 2. (a) Find the maximu and minimu of Duf at (0,0) over all unit vectors u. (b) Find the maximum and minimum of Duf over all points in the disk(,y) E R2 r2 + y2 < 4} and all unit vectors u. (llint. Think of IvJF as a function ofェand y in the disk.)
(a) By the Heine-Borel Theorem, show that R2 is not compact and the sphere S2 ={(x,y,z)∈R3 :x2 +y2 +z2 =1} is compact in R3. (b) Show that R2 and S2 is not homeomorphic. (i.e. no continuous bi- jective function f between R2 and S2 such that the inverse function f−1 is continuous). Question 1. (2 marks) (a) By the Heine-Borel Theorem, show that R2 is not compact and the sphere is compact in R3. (b) Show that R2 and S2...
Let S be the part of the sphere x^2 + y^2 + z^2 = 4 that lies between the cones z = √x^2 + y^2 and z = √3x^2 + 3y^2. (1) Let S be the part of the sphere x2 + y2 + Z2-4 that lies between the cones X +y and z a) Find a differentiable parametrization of S b) Find the area of S c) Find 22 dS. (1) Let S be the part of the sphere...
Let F(x, y, z) = (yza, x, xy +z) and answer the following questions. Show all work for each part. Q4.3 5 Points Let the surface Si be the part of the unit sphere which sits above the xy-plane. Use Stokes' Theorem to find SSs, curl(F).dS. Please select file(s) Select file(s)
Problem 4 Let S denote the surface in R3 defined by z (y +2)1, 1 z<oo, and E be the region bounded by S and z 1. Show that you can fill E with paint but you cannot paint its surface Problem 4 Let S denote the surface in R3 defined by z (y +2)1, 1 z