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208 Answered Questions for the topic Vectors

06/13/16

Special Subspaces Proof

Let L: Rn -> Rn be  linear mapping. Assume that {v1,...,vn} is a basis for Rn such that {v1,...,vk} is a basis for Ker(L). Prove that {L(vk+1),...,L(vn)} spans Range(L).   Not sure how to go... more
Vectors

05/18/16

A pencil case contains 14 yellow, 6 green, 10 purple and 12 red markers mixed together

a) what is the probability of selecting 2 green markers and 3 red markers if you select 5 markers?   b) what is the expected number of red markers among 5 markers pulled from the box?
Vectors

05/13/16

two vectors have magnitudes of 5.2 and 7.3. The dot product of the vectors is 20. what is the angle between the vectors?

 I need help with this question
Vectors

05/13/16

find a unit vector U with the same direction as x= {-40,9}

this is so hard for me
Vectors

04/24/16

Carrom board how the queen at the centre. The queen hit by the striker moves to front edge rebounds and goes in the hole behind striking line.

In above question find magnitude of displacement of queen from centre to the front edge
Vectors

04/14/16

If a force of 30 pounds is directed 30° from the vertical, what vector represents this force?

If a force of 30 pounds is directed 30° from the vertical, what vector represents this force?
Vectors

04/14/16

Determine the angle measure between vectors u and v: u = – 3i + 3j and v = 3i + 2j

Determine the angle measure between vectors u and v: u = – 3i + 3j and v = 3i + 2j
Vectors

04/14/16

Determine the angle measure between vectors u and v: u = 4i – 2j and v = i + 3j

Determine the angle measure between vectors u and v: u = 4i – 2j and v = i + 3j .
Vectors

04/14/16

Let v=square root of 2i - 3 square root of 2j. Find a vector, w, that is 4 times the length of v and points in the same direction as v.

Let v=square root of 2i - 3 square root of 2j. Find a vector, w, that is 4 times the length of v and points in the same direction as v.
Vectors Math Maths

04/07/16

Maths Vectors Question

Show that, for all vectors, u and v, |u x v|^2 = |u|2|v|2 - |u.v|2

03/17/16

Trig Vector Question, What is the ground speed of the plane?

An airplane has an airspeed of 500 kilometers per hour bearing N45°E. The wind velocity is 60 kilometers per hour in the direction N30°W. Find the resultant vector representing the path of the... more

02/24/16

Find the inequalities inside a right angle triangle

the right angle triangle ABC has three vertices A(-3,5) B(3,5) C(-3,-1) the equation of the line BC is y= x + 2 write down the inequalities which define the region INSIDE the triangle ABC the... more
Vectors Physics Angle

02/03/16

What are the components in terms of the angle & magnitude?

What are the x & y components of vector E in terms of the angle σ & the magnitude E?   For the same vector, what are the x & y components in terms of the angle ø & the magnitude... more
Vectors

02/02/16

A canoe sets out on a course given by the vector <5,11>. What is the length of the canoe's course to the nearest unit?

i need the distance to the nearest degree

01/21/16

How do you add 2D vectors a+b with the component method?

How do you add 2D vectors a+b if the magnitude of vector a is 10, its angle with (+) x-axis is 45 and angle with (+) y-axis is 45 ... then vector b has a magnitude of 3 angle with (+) x-axis... more
Vectors Linear Algebra

01/08/16

equations and vectors

Given the following parametric equation of the line l:x = 2 − 7t, y = 3 + 4t, z = −t, t ∈ R,give two points on l and a vector parallel to l.
Vectors Linear Algebra

01/08/16

Find the Equation of the plane

Find the equation of the plane which contains the point ( 2/3, −1, 3) and has normalvector 3i − 2j + 9k. Also, find another two points on this plane which are differentfrom ( 2/3, −1, 3).
Vectors Math Calculus

11/12/15

Evaluating with Vectors

For the vectors u=(-3,-2) and v=(4,-2), evaluate the following:   a) The magnitude (length) of vector u (simplified radical form) b) A unit vector in component form which has the same direction... more
Vectors Math Physics

10/11/15

Repeated posting: Add these vectors or subtract them? corrected a typo in the problem

  A jet plane intended to be on a velocity and course of 870 knots, 44 degrees south of west encounters wind. The flight tower shows that their actual velocity and path is 840 knots, 49 degrees... more
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