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121 Answered Questions for the topic vector

Vector Equilibrium

02/10/15

concurrent force

what are the conditions for a concurrent force system?
Vector Algebra Linear

11/25/14

Find a basis of the subspace R4 consisting of all vectors

Find a basis of the subspace of R4 consisting of all vectors of the form [x1, -2x1+x2, -9x1+4x2, -5x1-7x2]  
Vector Coordinate

11/25/14

Find the coordinate vector of x with respect to the basis B

Find the coordinate vector of x=[-1,2,4] with respect to the basis B={[1,4,6],[0,1,-4],[0,0,1]}   |x|B=
Vector Algebra Linear

11/13/14

Express the vector v as a linear combination of x and y

Express the vector v=[6,2] as a linear combination of x=[-4,-1] and y=[-5,-1]. v=?x+?y
Vector Algebra Linear

11/12/14

express the vector v as a linear combination

Express the vector v=[6,2] as a linear combination of x=[-4,-1] and y=[-5,-1] v=?x+?y
Vector Algebra Linear

11/09/14

Find a vector v in R3 such that H=span(v)

Let H be the set of all vector of the form [-4s,-3s,5s]. Find a vector v in R3 such that H=span {v} v=?
Vector Linear Matrix

11/09/14

Express the vector v as a linear combination of x and y

Express the vector v= [6,2] as a linear combination of x= [-4,-1] and y[-5,-1]   v=?x+?y
Vector Linear Magnitude

10/30/14

The crossproduct of the dots are

You are looking down at a map. A vector U with |U| 1 points north and a vector V with |V|= 9 points northeast. The crossproduct UxV points:A) south?B) northwest?C) up?D) down ?   The magnitude... more
Vector Algebra Linear

10/29/14

Find a unit vector with positive first co-ordinate

Find a unit vector with positive first coordinate that is orthogonal to the plane through the points P = (-5, -5, -4), Q = (-1, -1, 0), and R = (-1, -1, 5).
Vector Algebra Linear

10/27/14

Find an equation of the plane

Find an equation of the plane through the point (-5, -1, 1) and perpendicular to the vector (-1, 1, 5). Do this problem in the standard way
Vector

10/26/14

Vector algebra

If DEF are midpoints of triangle ABC PROVE OA+ OB+ OC =OD +OE +OF
Vector Linear Product

10/19/14

Find the dot product of x and y

Let x = [-4, 4,5] and y=[0,0,-3] Find the dot product of x and y x.y=?
Vector Linear Inverse

10/19/14

Find the vector w=2u-3v and its additive inverse.

Let u=(1,-1,0) and v=(1,-2,-3). Find the vector w=2u-3v and its additive inverse. w= -w=  
Vector Algebra Angle

10/19/14

Find the angle between the vectors

Find the angle between the vectors  [1  4 -5]   and [5 -5 4]
Vector Angle Graphing

05/17/14

Applications of the Dot Product (Vectors)

Determine the angle between vector PQ and the positive x-axis, given endpoints P(4,7) and Q (8,3)

05/17/14

Applications of the Dot Product (Vectors)

Determine the interior angles of triangle ABC for A(5,1), B(4, -7), and C (-1,-8)

05/17/14

Applications of the Dot Product (Vectors)

A force, F of 25 N is acting in the direction of a = (6,1).    a) Find a unit vector in the direction of a. b) Find the Cartesian vector representing the force, f, using your answer from part a)   more
Vector

06/07/13

Find the unit vector?

Let f(x, y, z)=yz+xz-6. At the point x=1, y=1, z=1, find the unit vector that points in the direction for which f is increasing at the fastest rate.
Vector Math

06/06/13

Compute the curl?

Let F(x, y) be the vector field ((x-y)/(x^2+y^2), (x+y)/(x^2+y^2)). Compute curl(F).
Vector

05/18/13

Find a potential function for the vector field?

Find a potential function for the vector field f(x, y)=2x/y i+(1-x^2)/y^2 j.
Vector

04/01/13

Find the principal unit normal vector?

Find the principal unit normal vector to the curve defined by r(t)=<t, t^2>. T(t)=1/sqrt(1+4t^2)i+2t/sqrt(1+4t^2)j I need to find T'(t) using quotient rule but don't know how. Show your steps. more
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