Exam 11: Vectors; Lines, Planes, and Quadric Surfaces in Space

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The angle, in degrees and correct to two decimal places, between v=i3j+4k\mathbf { v } = \mathbf { i } - 3 \mathbf { j } + 4 \mathbf { k } and w=3i+j3k\mathbf { w } = 3 \mathbf { i } + \mathbf { j } - 3 \mathbf { k } is

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In the three-dimensional Euclidean space, the graph of y=3x2y = 3 x ^ { 2 } is

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Which of the following is not true? ​

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Let , and u=1,1,6,\mathbf { u } = \langle 1,1 , - 6 , \rangle Then v=3,0,8\mathbf { v } = \langle 3,0,8 \rangle is

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Which of the following is true? ​

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The angle, in degrees and correct to two decimal places, between v=3i+2jk\mathbf { v } = - 3 \mathbf { i } + 2 \mathbf { j } - \mathbf { k } and w=2i+jk\mathbf { w } = 2 \mathbf { i } + \mathbf { j } - \mathbf { k } is

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The cross product of v=3i+jk\mathbf { v } = 3 \mathbf { i } + \mathbf { j } - \mathbf { k } and w=2i+j+k\mathbf { w } = - 2 \mathbf { i } + \mathbf { j } + \mathbf { k } is

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The value of a that makes v=4i+5j+3k\mathbf { v } = - 4 \mathbf { i } + 5 \mathbf { j } + 3 \mathbf { k } and w=aijk\mathbf { w } = a \mathbf { i } - \mathbf { j } - \mathbf { k } orthogonal is

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The distance between P1=(1,2,6)P _ { 1 } = ( - 1,2 , - 6 ) and P2=(1,2,5)P _ { 2 } = ( 1,2 , - 5 ) is

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The area of the parallelogram PQRS with vertices P=(1,1,6),Q=(5,3,0)P = ( 1,1 , - 6 ) , Q = ( 5 , - 3,0 ) \text {, } and R=(2,4,1)R = ( - 2,4,1 ) is

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The distance between P1=(10,3,4)P _ { 1 } = ( 10 , - 3,4 ) and P2=(8,2,6)P _ { 2 } = ( 8,2,6 ) is

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The unit vector resulted from normalizing the vector w=2i3j4k\mathbf { w } = 2 \mathbf { i } - 3 \mathbf { j } - 4 \mathbf { k } is

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In the three-dimensional Euclidean space, the graph of z=x2+4y2z = x ^ { 2 } + 4 y ^ { 2 } is

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The volume of the parallelepiped whose adjacent sides are the vectors and u=8i6j+5k\mathbf { u } = 8 \mathbf { i } - 6 \mathbf { j } + 5 \mathbf { k } is

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The distance between P1=(1,2,3)P _ { 1 } = ( 1,2,3 ) and P2=(4,5,6)P _ { 2 } = ( 4,5,6 ) is

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Let P1=(2,4,7)P _ { 1 } = ( - 2,4 , - 7 ) and P2=(3,1,6)P _ { 2 } = ( 3,1 , - 6 ) If v is P1P2\overrightarrow { P _ { 1 } P _ { 2 } } in standard position, then v is

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The unit vector resulted from normalizing the vector w=i+j+k\mathbf { w } = \mathbf { i } + \mathbf { j } + \mathbf { k } is

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The center and radius of the sphere x2+y2+z2+2x2z=1x ^ { 2 } + y ^ { 2 } + z ^ { 2 } + 2 x - 2 z = - 1 are

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