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(3) Consider f: R3- R3 defined by (u,, w)-f(r, y, :) where u=x w = 3~. Let A = {1 < x < 2, 0 < xy < 2, 0 < z < 1). Write down (i) the derivative Df as a matrix (ii) the Jacobian determinant, (ii) sketch A in (x, y. :)-space, and iv) sketch f(A) in (u. v, w)-space.
2. Let U be an open subset of R and let A be a compact subset of U. Suppose that f: U R is a iction of class C() aud let F-(()e KIf(r, y) 0 and that Df does not vatish on E. Investigate whether Dis a Jordan region. annc
Let U be an open subset of R. Let f: U C Rn → Rm. (a) Prove that f is continuously differentiable if and only if for each a є U, for each E > 0, there exists δ > 0 such that for each x E U, if IIx-all < δ, then llDf(x)-Df(a) ll < ε. (b) Let m n. Prove that if f is continuously differentiable, a E U, and Df (a) is invertible, then there exists δ...
2. Let u(z,t) be a differentiable function on R x [0, 0o). a) Show that the directional derivative of u at (x, t) = (zo, to) along v is Dvu(x, t) = ▽u(ro, to) , v b) Solve the following homogeneous linear transport equation ul + uz = 0, u(x,0) =-2 cosx c) Solve the following non-homogeneous equation ut-2uz--2 cos (x-t), u(x, 0) = sin x d) Solve the following second-order homogeneous linear euqation u(z,0) = sin x, ut (z,...
The polar equation r = θ defines a spiral in the xy-plane. Let C be the portion of this spiral starting at (x, y) = (−3π, 0) and ending at (x, y) = (0, 0). Let F(x, y) = < (y − 1)^e cos(x−xy) sin(x − xy), xe^cos(x−xy) sin(x − xy) > Find Z C F · dr
2. Let f(x,y) = e-r-u, 0 < x < oo, 0 < y < oo, zero elsewhere, be the pdf of X and Y. Then if Z = X + Y, compute (a) P(Z 0). (b) P(Z 6) (c) P(Z 2) (d) What is the pdf of Z?
3. (7 points) Let u(x, y) be the steady-state temperature u(r, y) in a rectangular plate whose vertical r0 and 2 are insulated. When no heat escapes, we have to solve the following the boundary value problem: a(z,0) = 0, u(z,2) = x, 0 < x < 2 (a) By setting u(x, g) -X(x)Y(u), separate the equation into two ODE 0 What ane the sewr homdany condiome hoald Xe) watiy (37)2. (c) Find x(r) for the case when λ-0 and...
Problem 2. Let be the quarter torus with outward normal. Use the parameterization r(u, v) = (4 + 2 cos(v)) cos(u)i + (4 + 2 cos(u)) sin(u)j + 2 sin(v)k, for 0 Susand 0 <0527 (a) Find a parameterization for each of the curves forming the boundary of E. Make sure the orientation of the curves match the orientation induced by S. (b) Let F(x, y, z) = xyi+yzj+rzk. Evaluate S/.( VF) ds.
(1 point) 5x2 — 5у, v %3D 4х + Зу, f(u, U) sin u cos v,u = Let z = = and put g(x, y) = (u(x, y), v(x, y). The derivative matrix D(f ° g)(x, y) (Leaving your answer in terms of u, v, x, y ) (1 point) Evaluate d r(g(t)) using the Chain Rule: r() %3D (ё. e*, -9), g(0) 3t 6 = rg() = dt g(u, v, w) and u(r, s), v(r, s), w(r, s). How...
4.let U= {q,r,s,t,u,v,w,x,y,z}; A= {q,s,u,w,y};and C={v,w,x,y,z,}; list the members of the indicated set , using set braces A'u B A.{Q,R,S,T,V,X,Y,Z} B.{S,U,W} C.{R,S,T,U,V,W,X,Z} D.{Q,S,T,U,V,W,X,Y}