1,975 Answered Questions for the topic linear algebra

Linear Algebra

11/01/15

For any a, x, y...
For any a, x, y ∈ R define x⊕y = (x3+y3)1/3 and a⊗x = ³√ax.  Show that a⊗(x⊕y) = (a⊗x)⊕(a⊗y).
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10/25/15

Volume of a Pyramid
Find the volume of a pyramid given its height is 138.8m and its base is 230.4m along the side   use the formula:           | x1  y1  z1  1|                                       | x2  y2  z2 ... more
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Linear Algebra

10/22/15

Linear algebra
Many important techniques in fields such as CT and MR imaging in medicine,nondestructive testing and scientific visualization are based on tryingto recover a matrix from its projections. (a) A... more
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Linear Algebra

10/10/15

What are some examples of why knowledge of linear algebra is important for an undergraduate engineering student ?
    Please give a specific type of problem where linear algebra techniques are required to solve the problem....
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Linear Algebra

08/18/15

suggest me a real world application of linear algebra to civil engineering
I have to submit term project in linear algebra that has a real world application to civil and construction engineering. I searched in the internet a lot to find an idea but I have got... more
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Linear Algebra Math

08/12/15

If A is an n x n matrix True or False:?
1. If A has only real entries, then all of the eigenvalues of A are real numbers. 2. There could be eigenvalues for A for which there is only 1 associates eigenvectors. 3. There could be... more
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06/24/15

how do I calculate how many apples and oranges were bought with an amount of money
Word problem where I need to build an equation.  A person spent $7.75 buying apples and oranges.  Apples cost: $0.40 each and oranges $0.35 each. How many apples and oranges were bought?
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06/12/15

Linear Programming?
In the following linear program, State what you are letting x and y be Give the objective function Write the constraints as linear inequalities Show the graph. Be sure to do the shading. List all... more
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Linear Algebra

06/04/15

The length of a rectangle is twice its width. If the area of the rectangle is 98 ft2 ?, find its perimeter
The length of a rectangle is 5 inches longer than its width. If the perimeter of the rectangle is 42 in, find its area 
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Linear Algebra

06/04/15

The length of a rectangle is twice its width. If the area of the rectangle is 98 ft2 ?, find its perimeter
The length of a rectangle is twice its width. If the area of the rectangle is 98 ft2 , find its perimeter 
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Linear Algebra

06/04/15

The length of a rectangle is twice its width. If the area of the rectang le is 98 yd find its perimeter
The length of a rectangle is twice its width. If the area of the rectangle is 98 yd2 , find its perimeter 
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Linear Algebra Linear Programming

05/19/15

Maximum profit with limited resource
A farmer has 10km2 of land in which he can sow either wheat or barley. The farmer has only 10kg fertilizer and 5kg insecticide. Per square kilometers wheat requires 2kg fertilizer and 2kg... more
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Linear Algebra

05/16/15

Let L be the line y = 5-9x in R^2. Find vectors a and b so that v = a +tb is a parametric equation for L.
Stuck on this linear algebra question.
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Linear Algebra Calculus Linear Vector

04/27/15

Suppose S_1={u_1,u_2} and S_2={v_1,v_2} are each independent sets of vectors in an n-dimensional vector space V.
Let us assume that every vector in S_2 is a linear combination of vectors in S_1.Question: Does that mean that S_1 and S_2 are bases for the same subspace of V?I know that the answer to this... more
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Linear Algebra

04/21/15

How do you find the Square Root of a Matrix????
Find a Square root of the Matrix   A =   [4  3]         [2  3]    This is a 2x2 matrix      
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Linear Algebra

04/19/15

How to calculate the rank of matrix with parameters?
A = {(b+3; a; 4; -2b-1)(b; -3; 5; -6)(-1; 1; 2a+1; 1-a)}   No idea how to solve this, tried everything.. help please! :)
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Linear Algebra Linear Equations

03/17/15

james invests $20000 in an account that has an annual interest rate of 8.3%. which is the correct equation?
P6=20000(1+.083)6 P6=20000(1+.083)6+1 P6=20000(1+.083)6-1 P6=20000(1+.83)6-1
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Linear Algebra

03/13/15

The line passing through the origin and parallel to the line passing through points (8,5) and (-9,3)
Find the equation of the line that satisfies the given condition    
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Linear Algebra

03/02/15

Linear algebra
Suppose you invest $1500 in equipment to put pictures on T-shirts. You buy each T-shirt for $3. After you have placed the picture on a shirt, you sell it for $20. How many T-shirts must you sell to... more
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Linear Algebra

02/02/15

Linear Algebra Vector Equation???
The only question on my review that I don't know how to solve.     Solve for x:             [ 6 ]4x +   [ -3 ]  = x         [ -9 ]         key note :    [ 6 ]                    [ -3 ]  ... more
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Linear Algebra

12/20/14

if a line has a slope of 2 and passes through (4,-1) what is the y-intercept?
so confused please help :/
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Linear Algebra Equations Linear Equations

12/08/14

solve the system of linear equations
6x+5=-20 2x+2y+6
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11/03/14

i need to know how fast this bat flew in 4 hours
a bat flying for 6 hours at an average speed of 9 km/h. the bat flew at 11km/h during the first 2 hours of its flight. how fast did the bat fly the last 4 hours?
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Linear Algebra Linear Equations Maths

09/15/14

Finding solutions to equations with the constant k? Linear algebra
Consider the system of linear equations x+ 2y =2 -x + (k-3)y +3z = −2 2x + (k+3)y + (k+3)z = 5 where k ∈ R is a constant. Determine the values of k for which the system has a unique solution,... more
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Linear Algebra

06/27/14

basis for R^3
{(1,2,4)T,(2,1,3)T,(4,-1,1)T} is a basis for R3
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