Exam 13: Vectors and the Geometry of Space

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Find u. Find u.    -v = 7i - 3j + k, u = -3j + 4k -v = 7i - 3j + k, u = -3j + 4k

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Identify the type of surface represented by the given equation. -Identify the type of surface represented by the given equation. -  +   = 5 + Identify the type of surface represented by the given equation. -  +   = 5 = 5

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Determine whether the following is always true or not always true. Given reasons for your answers. -u × 0 = 0

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Give a geometric description of the set of points whose coordinates satisfy the given conditions. -Give a geometric description of the set of points whose coordinates satisfy the given conditions. -  +   +   < 1 + Give a geometric description of the set of points whose coordinates satisfy the given conditions. -  +   +   < 1 + Give a geometric description of the set of points whose coordinates satisfy the given conditions. -  +   +   < 1 < 1

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Find the indicated vector. -Let u = Find the indicated vector. -Let u =   , v =   . Find -u + 2v. , v = Find the indicated vector. -Let u =   , v =   . Find -u + 2v. . Find -u + 2v.

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Identify the type of surface represented by the given equation. -Identify the type of surface represented by the given equation. -  +   =  + Identify the type of surface represented by the given equation. -  +   =  = Identify the type of surface represented by the given equation. -  +   =

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Find the angle between u and v in radians. -u = 7j - 2k, v = 4i - 6j - 7k

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Solve the problem. -An airplane is flying in the direction 10° east of south at 701 km/hr. Find the component form of the velocity of the airplane, assuming that the positive x-axis represents due east and the positive y-axis represents due north.

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Write the word or phrase that best completes each statement or answers the question. -Show that the vectors Write the word or phrase that best completes each statement or answers the question.  -Show that the vectors   b +   a and   b -   a are orthogonal. b + Write the word or phrase that best completes each statement or answers the question.  -Show that the vectors   b +   a and   b -   a are orthogonal. a and Write the word or phrase that best completes each statement or answers the question.  -Show that the vectors   b +   a and   b -   a are orthogonal. b - Write the word or phrase that best completes each statement or answers the question.  -Show that the vectors   b +   a and   b -   a are orthogonal. a are orthogonal.

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Find a parametrization for the line segment beginning at Find a parametrization for the line segment beginning at   and ending at   . -  ( -3, 7, 3) and   (0, 7, 7) and ending at Find a parametrization for the line segment beginning at   and ending at   . -  ( -3, 7, 3) and   (0, 7, 7) . -Find a parametrization for the line segment beginning at   and ending at   . -  ( -3, 7, 3) and   (0, 7, 7) ( -3, 7, 3) and Find a parametrization for the line segment beginning at   and ending at   . -  ( -3, 7, 3) and   (0, 7, 7) (0, 7, 7)

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Solve the problem. -Find the magnitude of the torque in foot-pounds at point P for the following lever: Solve the problem. -Find the magnitude of the torque in foot-pounds at point P for the following lever:

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Match the equation with the surface it defines. -Match the equation with the surface it defines.     -  +   +   = 1   + Match the equation with the surface it defines.     -  +   +   = 1   + Match the equation with the surface it defines.     -  +   +   = 1   = 1 Match the equation with the surface it defines.     -  +   +   = 1

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Find the indicated vector. -Let u = Find the indicated vector. -Let u =   . Find 8u. . Find 8u.

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Find both the parametric and the vector equation of the line. -The line through (4, -1, 3) that is perpendicular to both u = (2, 0, -1) and the y-axis.

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Solve the problem. -Find the area of the triangle determined by the points P(1, 1, 1), Q( 6, 6, -3), and Solve the problem. -Find the area of the triangle determined by the points P(1, 1, 1), Q( 6, 6, -3), and

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Determine whether the following is always true or not always true. Given reasons for your answers. -u × v = -(v × u)

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Write the equation for the plane. -The plane through the point P( 4, -3, 2) and normal to n = Write the equation for the plane. -The plane through the point P( 4, -3, 2) and normal to n =   . .

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Solve the problem. -A force of magnitude 8 pounds pulling on a suitcase makes an angle of 30° with the ground. Express the force in terms of its i and j components.

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Find the triple scalar product (u x v) ∙ w of the given vectors. -u = -5i - 3j + 4k; v = 5i - 4j + 2k; w = 10i - 5j - 8k

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Solve the problem. -Find the area of the parallelogram determined by the points P(7, -5, 5), Q( 2, -7, -3), Solve the problem. -Find the area of the parallelogram determined by the points P(7, -5, 5), Q( 2, -7, -3),   and  and Solve the problem. -Find the area of the parallelogram determined by the points P(7, -5, 5), Q( 2, -7, -3),   and

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