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Linear Algebra
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Questions (909)
1)Given that A=[2 4] and B=[11 3],find C such
[3 6]. [3 6 ] that B×C=A
4 answers
asked by
Maggie.K
48 views
Let W be the subspace of R5 spanned by the vectors w1, w2, w3, w4, w5, where
w1 = 2 −1 1 2 0 , w2 = 1 2 0 1 −2 , w3 = 4 3 1 4
4 answers
asked by
sara
2,395 views
Let A [ a1, a2, a3] be a 3x3 non-singular matrix, where
1 a ,[a1, a2, a3] are the three columns of A. Define a 3 x 4 matrix B by
2 answers
asked by
Sam
956 views
Solve the following system using Gauss's algorithm
(a) x1 + 2x2 + 4x3 + 6x4 = 3 2x1 + x2 + 3x3 = -6 -2x1 + x2 + 6x3 + 4x4 = -11
4 answers
asked by
Robert
1,261 views
I have a problem with the following homework question:
Which product represents the solution to the system: -y + 7x=14 -x + 4y=1
7 answers
asked by
Jennifer
720 views
docs(dot)google(dot)com/file/d/0B4uUFmATOigqbjAxU2tRNjVwa1E/edit?usp=sharing
(a) What is the inner product of the 3rd row and
57 answers
asked by
SS01
879 views
Can someone start me off on these and please explain step by step how you got everything because I'm having difficulty
2 answers
asked by
Alex
593 views
Find the matrix A such that
1 0 −1 3 A = −1 −8 2 11 . Hint: Let A = a b c d A=
4 answers
asked by
Bersy
2,397 views
Find a vector of length 3 that is perpendicular to [2,1,-2]
4 answers
asked by
maath
2,170 views
please help me with this question I have no idea how to solve it, thanks
Suppose T is a transformation from ℝ2 to ℝ2. Find
4 answers
asked by
shana
3,982 views
If matrix A = [ 0 1 , -1 1]
find the value of p and q such that (pl+qA)^2 =A.
4 answers
asked by
Kaur
1,314 views
If A, B, and C are 3×3 matrices; and det(A) = −3, det(B) = −2, and det(C) = −1 then compute:
det(2A^−1C^−1A^TC^2B^2) =
4 answers
asked by
sal
2,383 views
Given the following matrix A, find an invertible matrix U so that UA is equal to the reduced row-echelon form of A:
You can
4 answers
asked by
valarie
3,946 views
a vector parallel to the line of intersection of the planes. x-2y-z=6 and 3x-y+z=4
the answer is <3,4,-5> so first, I took the
4 answers
asked by
sam
1,585 views
Given the following vector X, find a non-zero square matrix A such that AX=0:
You can resize a matrix (when appropriate) by
5 answers
asked by
sal
4,799 views
If the borderline is tau equals zero,the eigen values are?
9 answers
asked by
Alan Zamora
2,862 views
Given vectors u= (1,-1,3) and v= (-4,5,3) find an ordered triple that represents vectors 3u-2v.
a.(16,1,-7) b.(11,-13,3)
5 answers
asked by
alana
2,662 views
Gauss elimination method 3x+4y+5z=18, 2x-y+8z=13, 5x-2y+7z=20
4 answers
asked by
Tamil
1,183 views
Find a unit vector u in the direction opposite of ⟨−3,−9,−9⟩.
4 answers
asked by
George
2,595 views
Find two unit vectors that make an angle of 60° with v = ‹3, 4›. Give your answers correct to three decimal places.
I'm not
4 answers
asked by
angles
3,388 views
Find the equation of the line that is the image set of the flattening,
f(x,y)=(3x-3y, x-y)
4 answers
asked by
s17
1,912 views
A matrix A is said to be skew symmetric if A^T = -A. Show that is a matrix is skew symmetric then its diagonal entries must all
3 answers
asked by
kevin
1,450 views
Determine the vector and parametric equations of the plane that passes through the points Q(-3/2 , 0 , 0) , R(0,-1,0) and S
3 answers
asked by
ola
482 views
Determine vector and parametric equations for the line through the point A(2, 5) with direction vector Vector m = (1, -3).
3 answers
asked by
Lort
519 views
Suppose T is a transformation from ℝ2 to ℝ2. Find the matrix A that induces T if T is reflection over the line y=−3/2x.
Ple
3 answers
asked by
sam
2,398 views
Which system is represented by the matrix equation below?
[-7 -2] [x] [14] [15 8] [y] = [-8]
4 answers
asked by
Kirston
631 views
Find the parametric equations for the line of intersection of the planes x+y+z=3 and x-y+2z=2
I took the cross product of the 2
4 answers
asked by
Mackenzie
2,317 views
Let A be an invertible n x n matrix, and let B be an n x p matrix. Explain why (A^-1)(B) can be computed by row reduction:
[A B]
3 answers
asked by
Jen
1,697 views
Prove : If an n*n matrix A can be expressed as a product of elementary matrices, Ax = b is consistent for every n*1 matrix b.
My
3 answers
asked by
A
766 views
Find a nonzero vector orthogonal to the plane through the points P, Q, and R.? Consider the points below.
P(0,-3,0), Q(4,1,-3),
3 answers
asked by
#1
2,719 views
Explain the notation M^-1 used for the inverse of a square matrix M.
I thought M^-1 would be a normal inverse matrix except the
4 answers
asked by
maath
622 views
This is a cross product problem:
Given uxv=<2,-3,0> find (u-5v)x(u+4v) I appreciate your help Thank you!
4 answers
asked by
Frank
973 views
For what value of t are these two vectors parallel?
a) r = 4i + tj and s = 14i - 12j What I Know: vectors are parallel if one is
4 answers
asked by
Anna
2,234 views
Let
L: R2 �¨ R2 be a linear transformation for which we know that L(1 1)= [-2 1] L(-1 1)=[3 2] a)what is L(-1 5) b)what is L(u
4 answers
asked by
hannah
1,570 views
I understand that the answer to this is a+b-c, but I'm not sure how to show working out for this. Any help would be great.
" O is
3 answers
asked by
Vectors
1,124 views
Find the scalar and vector projections of b onto a.
a = <3, −4> b = < 6, 0> compab projab
3 answers
asked by
Mike
2,222 views
Use the Gauss-Jordan method to find all the solutions of the system
-3x1 +2x2 -x3 +6x4 = -7 7x1 -3x2 +2x3 -11x4 = 14 x1 -x4 = 1
6 answers
asked by
Cladis
1,650 views
Do the vectors (2,0,1),(-2,0,0) and (2,3,0) lie on the same plane? Explain your reasoning.
3 answers
asked by
Melinda
500 views
For which value of k does the matrix
8 k -9 -3 have one real engenvalue of multiplicity 2? Explain.
4 answers
asked by
Anonymous
3,515 views
Three vectors A,B,and C are related to one another such that
5A + 6B = 60C. A fourth vector D exists such that 30C + D = A.
3 answers
asked by
joy
812 views
If v1,...,v4 are in R^4 and v3 is not a linear combination of v1, v2, v4 then {v1, v2, v3, v4] is linearly independent.
Is this
3 answers
asked by
Ashley
1,859 views
Suppose T: ℝ3→ℝ2 is a linear transformation. Let U and V be the vectors given below, and suppose that T(U) and T(V) are as
4 answers
asked by
Big L
460 views
Use a specific example to explore how the cross product behaves under scalar multiplication. Is it true that k (Vector a ×
3 answers
asked by
Bobby
1,409 views
For three vectors u, v and w show that:
(u×v).[(v×w)×(w×u)]= [u.(v×w)]^2 .
3 answers
asked by
gourav bhardwaj
849 views
The vector u = (4300, 5200) gives the number of units of two models of laptops produced by a company. The vector v = 1800, 1200
3 answers
asked by
will
1,855 views
Use a specific example to prove that the cross product is also not associative. That is, use three specific vectors in 3-space
3 answers
asked by
Adiana
2,679 views
This is a matrix question.
R is the matrix (3r 1) (s 2s) 1. State, in terms of s and r the determinant of R 2. If r=1/3 and s=4
3 answers
asked by
lindsay
641 views
Consider the planes given by the equations
2y−2x−z=2 x−2y+3z=7 (a) Find a vector v parallel to the line of intersection of
3 answers
asked by
Felicia
2,925 views
For which value(s) of k will the dot product of the vectors (k,2k-1, 3) and (k,5,-4) be 7?
I did this so far, 2k-1=5 6/2 k=3
3 answers
asked by
Jake
894 views
Write the scalar equation of the line given the normal vector n and Point P.
n = [3,1], P = (2,4).
3 answers
asked by
Anonymous
835 views
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