Exam 11: Analytic Geometry In Three Dimensions

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Find a set of symmetric equations for the line through the point and parallel to the specified vector or line. Point: (7,0,0) Parallel to: v=(5,6,7)\mathbf { v } = ( 5,6,7 )

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Find the standard form of the equation of the sphere with the given characteristics. Center: (4,3,5)( 4,3,5 ) ;radius: 5

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Determine whether the planes are parallel,orthogonal,or neither. x + 2y + z = 6 -2x - 4y - 2z = -10

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Use the vectors u and v to find v · (v × u). u=3ij+4kv=2i+2jk\mathbf { u } = 3 \mathbf { i } - \mathbf { j } + 4 \mathbf { k } \quad \mathbf { v } = 2 \mathbf { i } + 2 \mathbf { j } - \mathbf { k }

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Find u × v. u=(6)i+(3)j+(2)kv=(5)i+(2)j+(1)k\mathbf { u } = ( 6 ) \mathbf { i } + ( 3 ) \mathbf { j } + ( 2 ) \mathbf { k } \quad \mathbf { v } = ( 5 ) \mathbf { i } + ( 2 ) \mathbf { j } + ( - 1 ) \mathbf { k }

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The vector v and its initial point are given.Find the terminal point. v = (1,5,7)( - 1,5 , - 7 ) Initial point: (5,-7,-2)

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Find the area of the triangle with the given vertices. A(3,4,9),B(7,9,1),C(8,8,6)A ( - 3 , - 4 , - 9 ) , B ( - 7 , - 9 , - 1 ) , C ( 8,8,6 )

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Find u × v and show that it is orthogonal to both u and v. u=(6,1,7)v=(5,5,1)\mathbf { u } = ( 6 , - 1,7 ) \quad \mathbf { v } = ( 5,5 , - 1 )

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Find the angle between the vectors u and v.Express your answer in degrees and round to the nearest tenth of a degree. u = (0,8,7)( 0 , - 8 , - 7 ) ,v = (7,6,7)( - 7 , - 6 , - 7 )

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Find the area of the parallelogram that has the vectors as adjacent sides. =2 =2+2

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Use vectors to determine whether the points are collinear. (-3,-3,7), (2,-4,6), (1,-4,5)

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Find the distance between the points. (0,0,0), (-4,9,-8)

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Find a set of parametric equations of the line. Passes through (3,4,3)( 3 , - 4 , - 3 ) and is parallel to v=(6,6,3)\mathbf { v } = ( 6 , - 6,3 ) .

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Determine whether the planes are parallel,orthogonal,or neither. 3x-z=3 7x+y+21z=7

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Find the magnitude of v. Initial point: (1,5,6)( 1 , - 5,6 ) Terminal point: (1,0,1)( 1,0 , - 1 )

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Find a set of parametric equations of the line. Passes through (4,6,5)( 4,6,5 ) and is perpendicular to 3x+6yz=63 x + 6 y - z = 6 .

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Find the general form of the equation of the plane with the given characteristics. Passes through (7,4,6)( 7,4,6 ) and is parallel to the yz-plane

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Find the magnitude of the vector v. v = (6,7,9)( - 6 , - 7 , - 9 )

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Find a set of parametric equations for the line through the point and parallel to the specified vector or line.(For each line,write the direction numbers as integers. ) Point: (2,5,3)( 2 , - 5,3 ) Parallel to: v=(4,3,6)v = ( 4 , - 3 , - 6 )

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Find the triple scalar product u(v×w)\mathbf { u } ^ { * } ( \mathbf { v } \times \mathbf { w } ) for the vectors u=(7,4,5),v=(6,6,1),w=(5,4,4)\mathbf { u } = ( 7,4 , - 5 ) , \mathbf { v } = ( 6,6 , - 1 ) , \mathbf { w } = ( - 5,4,4 )

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