F(x, y,z)=(y2 +e", 2xy + z sin y, cos y) is a gradient vector field. Compute Sc F. dr where C=GUC,, C işthe curve y = x^, z = 0 from (0,0,0) to (1,1,0) and C, is the straight line from (1,1,0) to (2,2,3)
Q6 [10+1+3=14 Marks] Let F be a force field given by F(x, y) = y2 sin(xy?) i + 2xy sin(xy?)j. (a) Show that F. dr is exact by finding a potential function f. (b) Is I = S, y2 sin(xy2) dx + 2xy sin(xy?) dy independent of path C? Justify your answer. (c) Use I to find the work done by the force field F that moves a body along any curve from (0,0) to (5,1).
F(x, y,z) = (y2 +e", 2xy + z sin y, cos y) is a gradient vector field. Compute Sc F. dr where C=GUC,, C işthe curve y = x^, z = 0 from (0,0,0) to (1,1,0) and C, is the straight line from (1,1,0) to (2,2,3).
7. (6pts) Consider F(x, y, z) = (y2 + z cos x)i + (3xy2 + 1)j + sin æk. Show that F is a conservative vector field and then compute SF. dr where C is any curve from (0,0,1) to (0,2,3).
36. Evaluate Llet (e® + y2)d«r + (3.r – sin(y?))dy 1 along the curve C=C + C2 + Cz shown at right. -2 0 20 3
Compute the iterated integral 2 V8-y2 8-r2-y2 2 sin(2y+ 2 )dzdxdy 0 Compute the iterated integral 2 V8-y2 8-r2-y2 2 sin(2y+ 2 )dzdxdy 0
question 4 4. Evaluate the iterated integrals x + y2 +z’ds where C is the curve parameterized by i(t)=(t,cos(2t),sin(2t)) on 0 S1s 21,
Let C be the closed curve defined by r(t) = costi + sin tj + sin 2tk for 0 <t< 27. (a) (5 pts] Show that this curve C lies on the surface S defined by z = 2xy. (b) (20 pts] By using Stokes' Theorem, evaluate the line integral F. dr C where F(x, y, z) = (y2 + cos x)i + (sin y +22)j + xk
(7/6 pts) Compute the work done by the force field F-[F2 + x,y2 + 2] along the curve C, which is the quarter-circle from (4, 0) to (0,4)
2) Find a rectangular equation for the curve with the given parametric equations. x = 2 sin(t).y = 2 cos(t);0 st <270 (b) x2 + y2 = 2 c) x2 + y2 = 4 (d) y = x2 - 4 (a) y2 - x2 = 2 (e) y = x2 - 2