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208 Answered Questions for the topic Vectors

Vectors Math Calculus

05/07/20

Vectors Problem - Find a unit vector perpendicular to a=(0,-2,1) and b=(8,-3,-1). Also Find the projection of vector a onto vector b. Please include steps.

There are small arrows pointing right on top of a and b (format won't let me add)
Vectors Math Calculus

05/07/20

Vectors Problem - Suppose u has magnitude 5, and v has magnitude 8, and the angle between the two vectors is 105 degrees. Find u • v. Please include steps.

there are small arrows pointing right on top of u and v (format won't let me add)
Vectors Math Calculus

05/07/20

Vectors Problem - Find the angles between u=(7,2,-5) and v=(9,-1,-6). Please include steps.

There are small arrows on top of u and v that point right (format won't let me add)
Vectors Math Calculus

04/30/20

Vectors Problem - Sketch a diagram(s) that supports the fact that -(u + v) = - u-v

There are little arrows on top of u and v pointing right (the format won't let me add it)
Vectors Algebra 2 Algebra

04/27/20

What Is The resultant Vector? Please help me! I need this answered today, please!

Two vectors act on a point as shown below. What is the resultant vector? (Carry 3 decimal places throughout calculations and round off to 2 decimal places at end.) ^ ... more
Vectors Algebra 2 Algebra

04/24/20

What Is The Resultant Vector? Can someone please, please, please help me. I really don’t get this.

Two vectors act on a point a shown below. What is the resultant vector? ^ | \ 7 | \ | 30° \ |————————— | | 3 V ... more
Vectors Math Geometry

04/20/20

Use a sketch graph and the formula for perpendicularity criterion to find the equation of the line perpendicular to the original line passing through (3, 11) and (5, 19).

Either point can be used in work. Please show all working.PLEASE HELP ME, I NEED THIS ANSWER IN THE NEXT HOUR OR TWO!! THANK YOU SM!!
Vectors Algebra 2 Algebra

04/17/20

Addition of Vectors:

Add 3∠25° - 5∠125° (Carry 3 decimal places throughout calculations and round off to 2 decimal places at end.)(A) 5.83∠59.04°(B) 6.26∠-26.85°(C) 2.03∠204.97°(D) - 2.00∠-100.00°(E) None of these For... more
Vectors Math Precalculus

04/03/20

(a)No one interferes with the ball. How long does it take the ball to hit the ground? (b)How far did the ball travel horizontally?

Aurora hit a baseball with an initial velocity of 70 feet per second at an angle of 30° with the horizontal. The ball hit her bat when the ball was 3 feet above the ground. Use answer from part a... more
Vectors Math Precalculus

04/02/20

Convert r=2/7sinθ-cosθ to rectangular form

03/12/20

Prove that the set {v + w, v + x, w − x} is always linearly dependent

Let v, w, x ∈ Rn be vectors. Prove that the set {v + w, v + x, w − x} is always linearly dependent (even if {v, w, x} is linearly independent).

03/12/20

If the set {v, w, x} is linearly independent, so is {v+w, v+x, w+x}

Let v, w, x ∈ Rn be vectors. Prove that if the set of vectors {v, w, x} is linearly independent, then so is the set {v + w, v + x, w + x}.

03/12/20

What is the value of t that would result in span((0, 1, −1),(1, 2, 1),(t, −1, 4))

Determine which values of t ∈ R result in span((0, 1, −1),(1, 2, 1),(t, −1, 4)) being(i) a line(ii) a planeor (iii) all of R3

03/12/20

Vectors and Span: True or False

(a) The inverse of a rotation matrix [R^θ] is [R^−θ].(b) If the vectors v1, v2, . . ., v3 are such that no two of these vectors are scalar multiples of each other then they must form a linearly... more

03/12/20

Vector Sets and Span

For each set of vectors, determine whether their span is {0}, a line, a plane, all of R2, or all of R3.A) {(0, 0), (3, 7)}B) {(1, 2),(3, 4)}C) {(0, 1, −2),(2, 1, 0),(1, 1, −1)}

03/12/20

Determine which of the following vector sets are and aren't in subspaces

A) The graph of the function y = 4x - 2 in R2B) The graph of the function y = cos(x) - 1 in R2C) The set of solutions (x, y, z) in the equation 3x - 4y + 2z = 0D) The set {(x, y) ∈ R2 : x ≥ 0 and y... more
Vectors Math Algebra 1

02/25/20

Isosceles triangle 3D Vectors.

Question " The points A and B have position vectors 10i -23j +10k and pi +14j - 22k respectively, relative to a fixed origin O, where p is a constant.Given that ΔOAB is isosceles, find three... more

Vector Valued Functions

Let r(t)= <sin(10t),cos(10t),sin(10t)cos(20t)>Find the point where r(t) intersects the xy-plane on the interval pi/10 < x < 3pi/20
2 4 5 6 7 8 9

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