Given the following matrix A, find an invertible matrix U so that UA is equal to the reduced rowechelon form of A:
You can resize a matrix (when appropriate) by clicking and dragging the bottomright corner of the matrix.
A =
3 3 9 −6
3 3 9 −6
−2 −1 −8 1
I believe the answer for U is
3 0 0
0 1 2
0 0 1
 👍
 👎
 👁
 ℹ️
 🚩
1 answer

well what is U * A using your U
3 +0 +0
0 1 2
0 +0 1
times
A = (interesting, first two equations (rows) the same :()
3 3 9 −6
3 3 9 −6
−2 −1 −8 1
==========================
well for the first two rows I get
9 +9 27 18
1 1 +7 + 4
reduced row echelon ?????
to check use
https://www.emathhelp.net/calculators/linearalgebra/reducedrowechelonformrrefcaclulator/?i=%5B%5B3%2C3%2C9%2C6%5D%2C%5B3%2C3%2C9%2C6%5D%2C%5B2%2C1%2C8%2C1%5D%5D&steps=on 👍
 👎
 ℹ️
 🚩
Damon
Answer this Question
Related Questions

algebra 2a solving systems using matrices
write the system of equations represented by the matrix [0 1 2 4] [2 3 6 9] [1 0 1 3] a: x+2y=4 2x3y+69=0 x+y=3 b: x+2y=4 23y+6=9 x+y=3 c: y+2z=4 2x+3y+6z=9 x+z=3 d: x+2z=4 2x3y+6=9 think its A

Algebra II
What is the solution of the system of equations? {3x  4y  3z = 7 {2x  6y + 2z = 3 {5x  2y + 5z = 9 A. (5,2,7) B. (5,2,7) C.(5,2,7) D. No solution Use a matrix to find the solution to the system of equations. {8x  8y = 16 {6x  9y = 108

Intermediate Algebra
Find the maximum value of the objective function and the values of x and y for which it occurs. F = 5x + 2y x + 2y (greater than or equal to) 6 2x + y (greater than or equal to) 6 Both x and y are greater than or equal to 0. I don't understand how to do

Algebra
Given the following vector X, find a nonzero square matrix A such that AX=0: You can resize a matrix (when appropriate) by clicking and dragging the bottomright corner of the matrix. X= 2 8 6 A= _ _ _ _ _ _ _ _ _ Please help, I do not understand this..

Math (just need some help)
Solve the system using an augmented matrix. x3y=17 2x6y=26 Can someone please explain what I am supposed to do in this problem?

Algebra 2 Linear Programming
Find the values of x and y that maximize or minimize the objective function. x+y < or equal to 8 2x+y < or equal to 10 x> or equal to 0, y > or equal to 0 A. (0,5) Maximum value is 100 B.(1,7) Maximum value is 220 C.(2,6) Maximum value is 280 D. (5,0)

math
U= { all positive integer less than or equal to 30} M={all even positive numbers less than or equal to 20} N={all odd number less than or equal to 19} S={all integer x: 10

Calc 3
Given the matrix A= a 6 5 a 8 8 7 9 a find all values of a that make A=0. Give your answer as a commaseparated list.

Algebra
Which linear system of equation does the matrix represent [2 3=10] [5 6=12] is it {2x + 5y =10 {5x + 6y =12

PreCalc
The fifth term of an arithmetic sequence is equal to 6 and the sum of the first 12 terms is equal to 45. Find the first term and the common difference.

Algebra II
Use a matrix to find the solution to the system of equations. {8x  8y = 16 {6x  9y = 108 A.(6,8) B.(6,8) C.(8,6) D.(6,8)

PreCalc
The fifth term of an arithmetic sequence is equal to 6 and the sum of the first 12 terms is equal to 45. Find the first term and the common difference. having trouble with this, can't figure out the steps?

Linear algebra
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 the matrix A that induces T if T is rotation by 1/6π.

Math/Calculus
Find k so that the following function is continuous on any interval: f(x)= kx 0 (less than or equal to) x (less than) 2 3x^2 2 (less than or equal to x) i know the answer is 12 but i don't know how to arrive at that. could you please walk me through the

Calculus  Linear Algebra
The coefficient matrix of a linear system has four rows and four columns. 1) How may equations are there in this linear system? 2) How may variables are there in this linear system? 3) If this coefficient matrix has a pivot in each column, how many

Math
please check my work. 1. The number of words (x) Tina can type per minute is at Least 50. write and graph and inequality. (I broke it down to these 2 choices because the A & D was incorrect) B. x is less than or equal to 50 C. x is greater than or equal to

Math
Find the matrix A such that 1 0 −1 3 A = −1 −8 2 11 . Hint: Let A = a b c d A=

Maths
If matrix A = [ 0 1 , 1 1] find the value of p and q such that (pl+qA)^2 =A.

math
7. The tennis team is selling key chains as a fundraiser. If its goal is to raise is at least 180, how many key chains must it sell at $2.25 each to meet that goal? Write and solve an inequality. a. 2.25k (greater than or equal to) 180; k (greater than or

math
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 be 0. A^T meant to be A transpose.
Still need help?
You can ask a new question or browse existing questions.