159 Answered Questions for the topic Matrix

Matrix

05/24/17

x1+3x=5 and 3x1-x2= -5 solve by Matrix
Algebra equation solving by Matrix
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Matrix

04/23/17

How do I work this?
Find the values of a and b such that the following system has solution (1, −2, 3).[1     a     b     1][2b  2a   5     13][2a  7     3b   −8]
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04/14/17

SOLVING MATRIX ON A CALCULATOR
I1-I2-I3=0     1714I2+1000I3+250=0     -1714I2-2000I3+500=0
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03/31/17

How to Simplify a matrix multiplication to get an equation
I have a matrix multiplication in order to receive an equation. I have solved it, but I'm not sure of the answer. Can you guys help me out here.??   The first matrix is a 2×2 matrix :          ... more
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03/12/17

Confusion with differential equation applied as a matrix
http://i.imgur.com/PknZsfZ.png   I'm confused on why the first row has values 0 + yk+1 + 0 and the second row has 0 + 0 + yk+2
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Matrix

03/09/17

solve by using a matrix
5x-6y=-8    3x-y=3
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01/17/17

Determine whether or not the determinant is 0.
Given a 3 × 3 matrix B with real entries, suppose that the system of linear equations determined by  B(x1 x2 x3) = (0 1 1) (they should be column matrices.) has infinitely many solutions. Determine... more
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12/26/16

determining subspaces
determine if {A ∈ M3x3 (R) : Tr(A) = 0 } is a subspace of M3x3 (R)
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11/30/16

What is the interest rate for each investment?
$1500 is invested in a fund that pays an annual interest rate of X%. $3000 is invested in a fund that pays an annual interest rate of Y%. The combined annual interest from both funds is $210. The... more
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Matrix

11/30/16

Starbucks wants to sell a 10 lb bag of coffee consisting of 3 flavors: vanilla, hazelnut, mocha.
Starbucks wants to sell a 10 lb bag of coffee consisting of 3 flavors: vanilla, hazelnut, mocha.The vanilla sells for $2 per lb; hazelnut for $2.50 per lb; mocha for $3 per lb. the bag will... more
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Matrix

11/30/16

Starbucks wants to sell a 10 lb bag of coffee consisting of 3 flavors: vanilla, hazelnut, mocha. How many of each flavor are in the 10 lb bag if the bag sells f
 Starbucks wants to sell a 10 lb bag of coffee consisting of 3 flavors: vanilla, hazelnut, mocha.The vanilla sells for $2 per lb; hazelnut for $2.50 per lb; mocha for 43 per lb. the bag will... more
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11/03/16

Matrix and Equations
Nissa and Juancho have $90 together. Nissa has 8 more dollars than Juancho. How much does each have? (I have to set up a matrix and solve) I know N+J=90 and J=N+8
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11/02/16

Linear Algebra: Matrix doubts
In A.A-1 = A-1.A How (A-1)-1 = A ?   Tell me the process
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10/24/16

Solving Matrix
a) the sum of two numbers is 37. the secound number is 3 more than the first number. write a system of equations to represent the given information   b) write a matric equation for the system... more
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10/24/16

What is the rank of a matrix with linearly dependent columns? And what's the null space?
Let's say that a and b are independent vectors, while x and y are non-zero scalars.    Suppose there is a matrix A = [a  xa  b  yb]. What would the rank be? Since there are 2 independent columns... more
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09/27/16

The sum of three numbers is 24. Twice the smallest number is 2 less than the largest number, and the largest number is equal to the sum of the other two.
just need three equations so i can create the matrices and i can solve from there. 
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Matrix

09/27/16

Is it possible for a matrix A to be equal to the negative of its own transpose?
Is it possible for a matrix A to be equal to the negative of its own transpose? That is, is it possible for ? If so, give an example of a nonzero 2x2 matrix A that satisfies this equation.
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Matrix

09/24/16

if A inverse matrix is given then is it able to find determinant of A.PLZ TELL ME THE METHOD
if A inverse matrix is given then is it able to find determinant of A(find determinant of A matrix NOT the determinant of A inverse matrix)plz tell me its urgent
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Matrix

09/24/16

How to find the value of y in this matrix equation if /A/ = 0
                2     y    -1 Given A =  y     2     1 . Find y if /A/ = 0                -3   -1     1
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07/27/16

Matrix word problem
Kayla and Mario are playing with a football at the park on a windy day. Mark throws the football straight up in the air, and a gust of wind blows it 10 feet west and 4 feet south from Mark.If |x... more
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Matrix

05/28/16

Matrix question
What is the relationship between the three elementary row operations performed on augmented matrix and the operations that lead to equivalent systems of equations?
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Matrix

05/04/16

Solve for x the Solution set is?
Matrix is 3  X 3   2  4   x 1 -3 -6   =-8 3  5   8
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Matrix

01/07/16

for the matrix
  A =[aij]=         -8       1       5                        15      15     -8                        3       14      -4   a) find the minor of the element a21 b) find the co-factor of the... more
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12/17/15

If, on the first observation the system is in state 1, what is the probability that it is in state 1 on the third observation?
A Markov chain has the transition matrix shown below:P=[0.2  0.4]     [0.8  0.6]   1. If, on the first observation the system is in state 1, what is the probability that it is in state 1 on the... more
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12/15/15

Find the equation of this line in slope intercept form.
Assume that the line passes through the point (−2,−1) and is parallel to the line through the points ( −2,−2) and (0,6).Find the equation of this line in slope intercept form. y=
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