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Let C be the helix parametrized by r(t) = (cost, sint,t), 0 <t<7/2 in R3. Compute...
Suppose C is a curve parametrized by r(t)=<cost,sint,1> and S is the portion of z=x^2+y^2 enclosed by C, located in the vector field F=<z,-x,y>. 25. Suppose C is the curve parametrized by F(t) = (cost, sint, 1) and S is the portion of z = x2 + y2 enclosed by C, located in the vector field F = (2, -,y). Verify Stokes' theorem. That is, find show they are, in fact, the same. fe dr and SIC (curl ) ñds...
Problem 1. Let y be the segment [0, 2] C C parametrized by r(t) = tz, te[0,1] C R. Compute the path integral ew dw. Problem 2. Let 7 be the path defined by (O) = ei0, 0 (0,21] Compute the integral sill sin w dw. w
Let M be the surface parametrized by T: (1, 0) R → R3 (u, v) = (ucov, usin 0,0 + 8"}2+1]" d) 1 Compute the mean curvature of M.
3. Let C be the curve r(t) = < sint, cost, t>,0 sts 1/2. Evaluate the line integral S ry ryds. 1/V2. 1/2, V2, 0,
EXERCISE 1.64. For the helix in Example 1.3, defined as y(t) (cost, sint,t), t E R, com defined as (t) (cos t, sin t,-t), te R. Describe the visual difference between a helix with positive torsion and a helix with negative torsion. pute the torsion function. Do the same for the helix EXERCISE 1.64. For the helix in Example 1.3, defined as y(t) (cost, sint,t), t E R, com defined as (t) (cos t, sin t,-t), te R. Describe the...
you can skip #2 Show that F() = Vf (), 1. Let F R3 -R be defined by F(I) = F12", where u where f(r,y,) = =- +22 2. Consider the vector field F(E,) = (a,y) Compute the flow lines for this vector field. 3. Compute the divergence and curl of the following vector field: F(x,y,)(+ yz, ryz, ry + 2) Show that F() = Vf (), 1. Let F R3 -R be defined by F(I) = F12", where u...
1L COS v 21) Let H denote the surface parametrized by r(u, )sin, where 7 0S11 land 0 < u < 2T. (a) Compute Tu, Tu, and Tu X T, (b) Compute 1L COS v 21) Let H denote the surface parametrized by r(u, )sin, where 7 0S11 land 0
Problem 2. Let a and b be constants. For the parametrized curve R(t) = (eat cos bt, eat sin bt), find the angle between R(t) and the tangent vector at R(t).
2 (7 points each) Consider the circle parametrized by r(t) 3,6 cos t, 6 sin t). (a) Compute its are length over the interval 0 < wfind an are leugth pi of the circle. 2 (7 points each) Consider the circle parametrized by r(t) 3,6 cos t, 6 sin t). (a) Compute its are length over the interval 0
c. Let F : R³ → R³ be a vector field on R, given by the following function F(x, y, 2) = (x2)i + (y2)J + (xy)k. Calculate the flux of the field across the surface of the hemisphere, : [0, 1] × [0, 2x] → R³, where parametrized by the following function Þ(r, 0) = (r cos 0)i + (r sin 0) + (1 – 1²)!/2 k.