Exam 15: Topics in Vector Calculus

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Use Stokes' Theorem to evaluate  Use Stokes' Theorem to evaluate   where F(x, y, z) =   (z - y)i +   (z<sup>2</sup> + x)j +   (x<sup>2</sup> - y<sup>2</sup>)k and  \sigma  is that portion of the sphere x<sup>2</sup> + y<sup>2</sup> + z<sup>2</sup> = 4 for which z  \ge  0. where F(x, y, z) =  Use Stokes' Theorem to evaluate   where F(x, y, z) =   (z - y)i +   (z<sup>2</sup> + x)j +   (x<sup>2</sup> - y<sup>2</sup>)k and  \sigma  is that portion of the sphere x<sup>2</sup> + y<sup>2</sup> + z<sup>2</sup> = 4 for which z  \ge  0. (z - y)i +  Use Stokes' Theorem to evaluate   where F(x, y, z) =   (z - y)i +   (z<sup>2</sup> + x)j +   (x<sup>2</sup> - y<sup>2</sup>)k and  \sigma  is that portion of the sphere x<sup>2</sup> + y<sup>2</sup> + z<sup>2</sup> = 4 for which z  \ge  0. (z2 + x)j +  Use Stokes' Theorem to evaluate   where F(x, y, z) =   (z - y)i +   (z<sup>2</sup> + x)j +   (x<sup>2</sup> - y<sup>2</sup>)k and  \sigma  is that portion of the sphere x<sup>2</sup> + y<sup>2</sup> + z<sup>2</sup> = 4 for which z  \ge  0. (x2 - y2)k and σ\sigma is that portion of the sphere x2 + y2 + z2 = 4 for which z \ge 0.

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F (x, y, z) = 12xyz i + 12xyz j + 12xyz k. Find the outward flux of the vector field F across the cube with vertices (0, 0, 0), (0, 0, 2), (0, 2, 2), (2, 2, 2), (0, 2, 0), (2, 0, 0), (2, 2, 0), and (2, 0, 2).

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Let Let   . Find divF. . Find divF.

(Multiple Choice)
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Evaluate \int C 8xy dx - 8y2dy where C is the line segment from (0, 0) to (2, 1).

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Find div F and curl F of F(x, y, z) = 11x3y i + 11xy3 j + 2k.

(Essay)
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Evaluate the line integral  Evaluate the line integral   where C is the helix x = cos t, y = sin t, z = t, 0  \le  t  \le 2  \pi . where C is the helix x = cos t, y = sin t, z = t, 0 \le t \le 2 π\pi .

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Use Stokes' Theorem to evaluate Use Stokes' Theorem to evaluate   over the circle x<sup>2</sup> + y<sup>2</sup> = 1, z = 1. over the circle x2 + y2 = 1, z = 1.

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Use Stokes' Theorem to evaluate  Use Stokes' Theorem to evaluate   where F(x, y, z) = 11(z - y)i + 11(z<sup>2</sup> + x)j + 11(x<sup>2</sup> - y<sup>2</sup>)k and  \sigma  is that portion of the sphere x<sup>2</sup> + y<sup>2</sup> + z<sup>2</sup> = 4 for which z  \ge   0. where F(x, y, z) = 11(z - y)i + 11(z2 + x)j + 11(x2 - y2)k and σ\sigma is that portion of the sphere x2 + y2 + z2 = 4 for which z \ge 0.

(Multiple Choice)
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Use Green's Theorem to evaluate Use Green's Theorem to evaluate   , where C is the square bounded by x = y = 0, and x = y = 1. , where C is the square bounded by x = y = 0, and x = y = 1.

(Multiple Choice)
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Evaluate  Evaluate   where F(x, y, z) = -x i - 2x j + (z - 1)k and  \sigma  is the surface enclosed by that portion of the paraboloid z = 4 - y<sup>2</sup> which lies in the first octant and is bounded by the coordinate planes and the plane y = x. The surface is oriented by upward unit normals. where F(x, y, z) = -x i - 2x j + (z - 1)k and σ\sigma is the surface enclosed by that portion of the paraboloid z = 4 - y2 which lies in the first octant and is bounded by the coordinate planes and the plane y = x. The surface is oriented by upward unit normals.

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Evaluate  Evaluate   where F(x, y, z) = 9y i - 9x j - 36z<sup>2</sup> k and  \sigma  is that portion of the cone   which lies above the square in the xy-plane with vertices (0, 0), (1, 0), (1, 1), and (0, 1), and oriented by downward unit normals. where F(x, y, z) = 9y i - 9x j - 36z2 k and σ\sigma is that portion of the cone  Evaluate   where F(x, y, z) = 9y i - 9x j - 36z<sup>2</sup> k and  \sigma  is that portion of the cone   which lies above the square in the xy-plane with vertices (0, 0), (1, 0), (1, 1), and (0, 1), and oriented by downward unit normals. which lies above the square in the xy-plane with vertices (0, 0), (1, 0), (1, 1), and (0, 1), and oriented by downward unit normals.

(Multiple Choice)
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F(x, y, z) = 7x2 i + [$A]j + 3xyz k. Find div F.

(Short Answer)
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Let Let   . Find curlF. . Find curlF.

(Multiple Choice)
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Use the divergence theorem to evaluate  Use the divergence theorem to evaluate   where   , n is the outer unit normal to  \sigma , and  \sigma  is the surface of the sphere by x<sup>2</sup> + y<sup>2</sup> + z<sup>2</sup> = 49. where  Use the divergence theorem to evaluate   where   , n is the outer unit normal to  \sigma , and  \sigma  is the surface of the sphere by x<sup>2</sup> + y<sup>2</sup> + z<sup>2</sup> = 49. , n is the outer unit normal to σ\sigma , and σ\sigma is the surface of the sphere by x2 + y2 + z2 = 49.

(Multiple Choice)
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Let  Let   and let  \sigma  be a closed, orientable surface that surrounds the origin. Then the flux  \phi   = and let σ\sigma be a closed, orientable surface that surrounds the origin. Then the flux ϕ\phi =

(Multiple Choice)
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Evaluate the surface integral  Evaluate the surface integral   , where  \sigma  is the portion of the cone r(u, v) = u cos v i + u sin v j + u k for which 1  \le  u  \le  2,   . , where σ\sigma is the portion of the cone r(u, v) = u cos v i + u sin v j + u k for which 1 \le u \le 2,  Evaluate the surface integral   , where  \sigma  is the portion of the cone r(u, v) = u cos v i + u sin v j + u k for which 1  \le  u  \le  2,   . .

(Essay)
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Is F(x, y) = 5x i + 5y j is a conservative vector field?

(Short Answer)
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Let Let   . Find divF. . Find divF.

(Multiple Choice)
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Use Stokes' Theorem to evaluate \int C -4yz dx + 4xz dy + 4xy dz where C is the circle x2 + y2 = 2, z = 1.

(Multiple Choice)
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Find div F and curl F of Find div F and curl F of   . .

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