# DHS 15.1 - Option 27. Decisions Ryabushko AP

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Uploaded: 09.11.2016
Content: 27v-IDZ15.1.doc (240,5 kB)

# Description

1. Dana function u (M) = u (x, y, z) and the point M1, M2. Calculate: 1) The derivative of this function in the direction of the point M1 M1M2 vector; 2) grad u (M1)

1.27. u (M) = x / y + y / z - z / x, M1 (-1, 1, 1), M2 (2, 3, 4)

2. Calculate the surface integral of the first kind on the surface S, where S - part of the plane (p), cut off by the coordinate planes.

(P): x + 3y + 2z = 6

3. Calculate the surface integral of the second kind.

where S - the surface of the paraboloid 1 - z = x2 + y2 (normal vector n which forms an acute angle with the unit vector k)

4. Calculate the flow vector field a (M) through the outer surface of the pyramid formed by plane (p) and the coordinate planes in two ways: a) determination using flow; b) using the formula Ostrogradskii - Gauss.

4.27. and (M) = (2y - z) i + (x + 2y) j + yk, (p): x + 3y + 2z = 6

# Additional information

Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)

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