1 : : Evaluate F dS whereF = (r",y",) and S is the solid bounded by the ry plane and the elliptic paraboloid z = 4-r² - y², a) by direct computation b) using Divergence theorem.
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- 5. Chose the curl of f (x, Y, z) = x² i + xyzj– zk at the point (2, 1, -2). a) 2î + 2k b) – 2î-23 c) 4i-4ĵ + 2k d) –2î-2k5. Chose the curl of ƒ (x, y, z) = x²î + xyzĵ– zk at the point (2, 1, -2). a) 2î + 2k b)-2i-2j c) 4î-4j+2k d) - 2i-2kSuppose f(x, y) satisfies the basic existence and uniqueness theorem in some rectangular region Rof the- xy- plane . Explain why two distinct solutions of the DE y' = f (x, y) cannot intersect or be tangent to each other at a point (x,, yo) eR.
- Calculate F · dr cylinder x2 + where F = xzi + 2zj – xyk and C is the intersection of the plane y = z+ 2 with y? = 4Q1// Evaluate , F ds where F = yi + xj + 4zk and S is the surface x² + y? = 9 in the first octant bounded the plane z=0 to z=3 and y=0.Let F(x, y, z) = (3ry², 3x²y + 4x, xe") and be an oriented surface of the solid bounded by the cylinder z² + y² = 1 and the planes z = -1 and z = 2. (i) Explain why Divergence Theorem applies. (ii) Use Divergence Theorem to compute [L, F F. ds.
- Calculate fs f(x, y, z) dS, where S is the part of the plane x + y+ z 2, where x, y, z > 0, and f(x, y, z) = z. (Use symbolic notation and fractions where needed. Use natural parametrization of a function, (x, y, f (x, y)).) /| f(x, y, z) dS = IncorrectIntegrate G(x, y, z) = x + y + z over the surface of the cube cut from the first octant by the planes x = a, y = a, z = a.Use Stokes' Theorem to evaluate of intersection of the plane x + 3y +z = 12 with the coordinate planes. (Assume that C is oriented counterclockwise as viewed from above.) F. dr where F = (x + 6z)i + (8x + y)j + (10y −z) k_and C is the curve
- a surface is defined by the parametric form. S(u,v)= X(u,v)i + Y(u,v)j + Z(u,v)k, where 0<= u <=2pi and 0<= v <=1 X(u,v) = (v2+1)cos2u Y(u,v) =vsinu Z(u,v) =-(v2+1) a. determine the normal vector of the surface S b. determine the unit normal vector of S(0,1/2) that point onwardUse Stokes' Theorem to evaluate F. dr where F = (x + 7z)i + (10x + y)j + (8y − z) k_and C is the curve of intersection of the plane x + 3y + z = 18 with the coordinate planes. (Assume that C is oriented counterclockwise as viewed from above.)6. (a) Compute directly I = f SsF·dS, where S is the surface of the sphere x² +y² + z² = 4 and F = xi + y3+ zk. (b) Check your result using the divergence theorem.