1,954 Answered Questions for the topic linear algebra

Linear Algebra Math

05/26/20

U: R­³ -> R³ , U(x, y, z) = (5x+8y+16z,4x+y+8z,-4x-4y-11z) is a lineer transformation. Find the functions that accept U as a root.
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Linear Algebra Math Algebra 2 Algebra

05/26/20

Algebra - Groups & Rings
For n > 1, let Zn = {[ 0 ], [ 1 ], [ 2 ],....., [ n - 1 ]}, the congruence classes of the integers modulo n: Show that Zn is a ring with respect to the operations defined by [ a ] + [ b ] = [ a... more
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Linear Algebra Math Algebra Slope

05/20/20

Please help me asap
Given the following graph, write the intercept form of the function. Then transform it into the standard and vertex forms.
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Linear Algebra Math Algebra Mathematics

05/20/20

Please help me asap
You are opening a widget selling business and want to know what you should sell each widget for. Your research team has found that if you make the price “x”, your total sales will be... more
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Linear Algebra Math Algebra Mathematics

05/19/20

Please help with math
A species of extremely rare, deep water fish rarely have children. If there are a 821 of this type of fish and their growth rate is 2% each month, how many will there be in half of a year, in 2... more
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Linear Algebra Math Algebra Mathematics

05/19/20

Define two terms, each containing the variables a and b.
Define two terms, each containing the variables a and b, with exponents on each. (For example: 10a3b-5) Find the quotient of the two terms. Explain step-by-step how you found the quotient.
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Linear Algebra

05/19/20

Distance rate time

flying against the jet stream, a jet travels 5530 miles in 7 hours. Flying with the jet stream, the same jet travels 5080 miles in 4 hours. what is the rate of the jet in still sir and what is the... more
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Linear Algebra

05/19/20

How to explain the why of augmented matrix is consistent without performing any row operation ?

Consider the two systems represented by the augmented matrices. If the first system is known to be consistent, explain why the second system is also consistent. Do not perform any row operations.
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Linear Algebra Math Algebra Graph

05/18/20

Define a cubic polynomial and a binomial (use only one variable in each). Show how to use the Vertical Method to multiply these two.
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Linear Algebra Math Algebra 1 Algebra 2

05/17/20

How does g(t)=3*9t change over a unit interval in t?
THE OPTIONS ARE....decreases by 9%increases by 9%increases by 9decreases 800%
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Linear Algebra

05/16/20

Algebra mathematics

First, create 3 equations of the form  , where a, b, c, and d are constants (integers between – 5 and 5). For example,  . Perform row operations on your system to obtain a row-echelon form and the... more
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Linear Algebra

05/14/20

Please explain the proof and importance of Theorem 4.5.2
 Please explain the proof and importance of Theorem 4.5.2: Let V be a finite-dimensional vector space, and let {v1, v2, ... vn} be any basis for V.(a) If a set has more than n vectors, then it is... more
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Linear Algebra

05/14/20

Linear equations

Jaiye is Y years old.(A)how old was she 3 years ago? (B)how old will she be in 4 years time? (C)find her age?.If half of what she Was 3 years ago is equal to one-third of what she will be in 4... more
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Linear Algebra

05/14/20

Linear equation

Jaiye is Y years old. (A)how old was she 3 years ago?(B)how old will she be in 4 years time? (C)find her age?.if half of what she Was 3 years ago is equal to one-third of what she will be in 4... more
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05/14/20

A quick answer for this question?
If A is a sequare matrix of order 3 and |A|=5 ,then |(2A)-1| is equal to?A)2/5B)1/40C)8/5D)1/10
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05/14/20

Quick less than an hour whats the answer for this?
Let A be a 3x3 matrix, and suppose that the matrix B is obtained from A by : R1←→R2; 5R2+R3→R3.If |A|= -12, then |B| =??
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Linear Algebra

05/13/20

Is it correct to represent a tensor with 2 covariant indices as a matrix of rows and columns on a paper?
We represent a tensor with 1 covariant index i & 1 contravariant index j as a matrix of rows and columns on a paper. The no of rows will be j. The no of columns will be i. Is it correct to... more
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Linear Algebra Projection

05/12/20

How to construct a matrix to project 4-dimensional space to a 2-dimensional plane?

How to Construct a matrix to project vectors in 4-dimensional space to a 2-dimensional plane that lies in the space and passes through the origin and the points (1,-1, -1, 1) and (1, -1, 1, 1).
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Linear Algebra Math Algebra 1 Algebra 2

05/12/20

The following table shows the amount of caffeine in Alex's bloodstream at various times since he drank a cup of coffee. # of hours since he drank the coffee, t # of mg of caffeine in his bloodstream
The following table shows the amount of caffeine in Alex's bloodstream at various times since he drank a cup of coffee. # of hours since he drank the coffee, t # of mg of caffeine in his... more
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Linear Algebra Matrices Projection

05/12/20

How to construct a matrixto project 4-dimensional space to a 2-dimensional plane?
How to Construct a matrix to project vectors in 4-dimensional space to a 2-dimensional plane that lies in the space and passes through the origin and the points (1 ,-1, -1, 1) and (1, -1, 1, 1).
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Linear Algebra Svd Condition Number

05/12/20

How to find the condition number of a 3*3 matrix with singular value 10, 1 and 1/10?
If the singular values of a 3*3 matrix are 10, 1 and 1/10 respectively, what is the condition number of the matrix? Is such a matrix numerically tractable?
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Linear Algebra Math Algebra 2 Algebra

05/10/20

College Algebra : Groups

For each of the following, let the operation ∗ be defined on Z by the given rule.Determine in each case whether Z is a group with respect to ∗ and whether it is an abelian group. State which, if... more
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Linear Algebra Math Algebra 2 Algebra

05/09/20

Algebra: Groups
Question :Determine whether each of the following given sets is a group with respect to the indicated operation. Show your work.(b) The set E of all even integers with operation addition.My work... more
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Linear Algebra Algebra

05/09/20

Find three consecutive integers such that 5 times the first is 5 more than the sum of the second and third integers.

Find three consecutive integers such that 5 times the first is 5 more than the sum of the second and third integers.
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05/06/20

Linear algebra question

Show that the following sets of vectors of R3 are linearly independentand span R3:(a) S1 = {(1, 2, 3),(3, 2, 1),(0, 0, 1)}.(b) S2 = {(3, 0, −6),(−4, 1, 7),(−2, 1, 5)}.
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