3) Let X, Y be vector fields. For all functions f, define the commutator X, Y]0=X(Y()-Y(X(f)....
12. Let g(x), h(y) and p(z) be functions and define f(x, y, z) = g(x)h(y)p(2). Let R= = {(x, y, z) E R3: a < x <b,c sy <d, eszsf} where a, b, c, d, e and f are constants. Prove the following result SS1, 5100,2)AV = L*()dx ["Mwdy ['Plzdz.
Let f: R -R and g : R → Rbe some functions, and let x be a vector in R . Suppose that all the components off and g are directionally differentiable at x, and that g is such that, for all w RM, y +az) - g(y) y, w Then the composite function F(x)-g(f(x)) is directionally differentiable at x and the following chain rule holds: F, (x,d)=g'(f(x);f,(x,d)), YdER". Let f: R -R and g : R → Rbe some...
Find the gradient vector fields for the following potential functions (a) f(x,y) = rºy - ry? (b) f(x,y, 2) = ln (1+z² + y2 + 2?)
Problem 4. (15 points each) Let F(x, y, z) = (0, x, y) G(x, y, z) = (2x, z, y) + (x, y, z) = (3y, 2x, z). (a) For each field, either find a scalar potential function or prove that none exists. (b) For each field, either find a vector potential function or prove that none exists. (c) Let F(t) = (2, 2t, t2). For which of these vector fields is ñ a flow line? Justify your answer.
17] L(t X and Y be sinooth vector fields on R". Define a map IXYLC"R") → C"R") by a Show that X, Y is a derivation on Co (R"), hence represents a smooth vector field on R". This is called the Lie bracket of X and Y lb] If we write X = Xia and Y = Ya,, then IX, Y-Zkak for some suooth functions Zk. Find an explicit expression for Zk in terms of the X's and Y''s. Ic]...
Please solve all parts in this problem neatly 3. Let f(x, y, ). g(y,z) and h(x,y,z) be C2 scalar functions. Prove the following identity: (a) By direct calculation (without using the vector identities) ( b) Using the vector identities. Clearly state which identities you have used . 3. Let f(x, y, ). g(y,z) and h(x,y,z) be C2 scalar functions. Prove the following identity: (a) By direct calculation (without using the vector identities) ( b) Using the vector identities. Clearly state...
21 Problem 20. Let S be the surface bounded by the graph of f(x,y)-2+y2 . the plane z 5; Os1; and .0sys1. In addition, let F be the vector field defined by F(x, y,z):i+ k. (1) By converting the resulting triple integral into cylindrical coordinates, find the exact value of the flux integral F.n do, assuming that S is oriented in the positive z-direction. (Recall that since the surface is oriented upwardly, you should use the vector -fx, -fy, 1)...
can you solve this vector problems? Find the outward flux of the vector field F(x, y, z) = (xi + yj + zk)/(x 2 + y 2 + z 2 ) 3/2 across the ellipsoid 4x^2 + 9y^2 + z^2 = 1. 6. (12 pts.) Find the outward flux of the vector field F(r,y, ) (ri yj+ zk)/(x2 + y2 22)3/2 across the ellipsoid 4r2 +9y2 + z2 = 1 6. (12 pts.) Find the outward flux of the vector...
Let f(x) and g(x) be any two functions from the vector space, C[-1,1] (the set of all continuous functions defined on the closed interval [-1,1]). Define the inner product <f(x), g(x) >= x)g(x) dx Find <f(x), g(x) > when f(x) = 1 – x2 and g(x) = x - 1
Let X and Y be sets, A is a subset of X. Define functions f: A --> Y and F: X --> Y. Show that F is an extension of f if and only if the graph of f is a subset of the graph of F.