 811 Answered Questions for the topic linear algebra

Linear Algebra Algebra 1 Algebra 2

1d

#### Any insight on how to solve this problem will be greatly appreciated.

Find the inverse of f(x)=|x-3|. State whether or not the inverse is a function. If it is not, what do we need to do to make it a function.
Linear Algebra Math Prealgebra

2d

#### The population of a small town is growing at a constant rate. (Please show me step by step)

The population of a small town is growing at a constant rate. In 2007 the population was 15,400 and in 2013 the population was 22,600.Part A: Use the data points (7, 15400) and (13, 22600) to write... more
Linear Algebra Algebra Linear Equations

2d

#### Linear Relationships in Point Slope Forn

An athlete has decided to track how many minutes the exercise each day. During the first day, the athlete exercised for 30 minutes. For each day after that, the athlete increased their exercise... more
Linear Algebra Complex Numbers

5d

#### determine the complex solutions of the equation

(z+4)3 = -8i
Linear Algebra Complex Numbers

5d

(z+4)3 = -8i
Linear Algebra

5d

#### What is the area of triangle bounded by the x-axis, the y-axis, and the line y=−4x+4?

What is the area of triangle bounded by the x-axis, the y-axis, and the line y=−4x+4?
Linear Algebra Algebra 1 Geometry

6d

#### Can you help me create a linear model?

I'm trying to help my son with algebra and he got the following problem. His in the 8th grade, but they are having him do HS algebra and he's having a difficult time.The U.S. population in 1910... more
Linear Algebra Geometry Translation

7d

#### Find the matrix that performs this translation.

This problem will walk through the process of rotating by 90 degrees counterclockwise around the point (3, 5). Our strategy for rotation around the point (3, 5) will be to begin with a vector whose... more
Linear Algebra Algebra 1

11d

#### Proofs for symmetric matrices and skew-symmetric matrices

A square matrix 𝐶C is called skew-symmetric if 𝐶𝑇=−𝐶CT=−C.Let 𝐴A be an 𝑛×𝑛n×n square matrix. Set 𝐵=12(𝐴+𝐴𝑇)B=12(A+AT) and 𝐶=12(𝐴−𝐴𝑇)C=12(A−AT).(a) (4 marks) Show that 𝐵B is a symmetric matrix... more
Linear Algebra Math

15d

#### Math Linear Algebra Question

Can someone help with this question please. Prove that |iw−3| = |iw+3| if and only if w is real.
Linear Algebra Math

15d

#### Math Linear Algebra

Find all values of k for which the vectors[1, 1, 1, 1], [1, 2, 3, k], [1, 4, 9, k^2], [1, 8, 27, k^3]are linearly dependent.
Linear Algebra

16d

#### An n×n matrix A has a fixed point if there is a vector v in Rn with A*v = v.

1)Show that every such A has at least one fixed point. 2) The identity matrix has infinitely many fixed points. For all arbitrary 2 × 2 matrices A, show that if A has two distinct fixed points v... more
Linear Algebra

16d

273 students enrolled in a freshman level chemistry class. By the end of the semester, 6 times the number of students passed as failed. Find the number of students who passed, and the number of... more
Linear Algebra

16d

#### Elementary Matrices

When you are finding all of the elementary matrices that must be multiplied by a matrix M such that E1E2E3M=M*(RREF) Does it matter if the path you took to get Matrix M to RREF matter?what I'm... more
Linear Algebra

16d

#### In the year 1989, an investment was worth $30200. In the year 1996, this investment was worth$35800. What is the value and rate of this investment?

In the year 1989, an investment was worth $30200. In the year 1996, this investment was worth$35800. What is the value and rate of this investment?
Linear Algebra

18d

#### Linear Algebra Notes and Confusion.

Hi, while reading the beginning of the notes in my linear algebra section I immediately hit a wall of confusion. (I've been googling on this and can't find out how he did this.) In the notes (which... more
Linear Algebra Proofs

19d

#### Order 8 of the following sentences so that they form a direct proof of the statement: 𝐴 is a square matrix. Prove that if 𝐴2=𝐴, then either 𝐴=𝐼 or 𝐴 is singular.

Order 8 of the following sentences so that they form a direct proof of the statement:A is a square matrix. Prove that if , then either  or  is singular.Options: Let A be an m×n matrix. Assume... more
Linear Algebra Proofs

19d

#### Order 6 of the following sentences so that they form a proof by CONTRAPOSITIVE of the statement: 𝐴 is a square matrix. Prove that if 𝐴^2=𝐴, then either 𝐴=𝐼 or 𝐴 is singular.

Order 6 of the following sentences so that they form a proof by CONTRAPOSITIVE of the statement: 𝐴 is a square matrix. Prove that if , then either  or  is singular.Options: Let A be an m×n... more

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