
linear algebra
if: A and B are matrices and A^2 is similar to B^2 Is A guaranteed to be similar to B?  Matrix similarity means that the matrices are identical if one of the matrices is converted to another basis. If matrices C and D are similar: C = P^1 * D * P
asked by mathstudent on July 20, 2007 
math
Which of the following subsets of the vector space Mnn are subspaces? (a) The set of all n × n symmetric matrices (b) The set of all n × n diagonal matrices (c) The set of all n × n nonsingular matrices
asked by kirsten on February 25, 2015 
Math (matrices)
No one answered my matrix question. Let me rephrase: Let A, B, and 0 be 2x2 matrices. Assuming that A is invertible and 0 is all zeroes, what is the inverse of the matrix [A0] [BA] (that is a 4x4 matrix represented as 4 2x2 matrices) The answer is in the
asked by James on November 16, 2006 
Algebra II
Can a matrix have a two digit number? I have to add the matrices[3 4] +[2 7] [7 6] +[3 8] Sorry this is the only way I know haw to put matrices on the board.
asked by JaneLee on October 27, 2007 
maths
If two matrices are known and are inverse of each other.How can we use these matrices to find the point of intersections for the given set of 3D planes? Kindly help
asked by Asfand on July 16, 2016 
Algebra
Provide an appropriate response. Suppose that A and B are two matrices such that A + B, A  B, and AB all exist. What can you conclude about the dimensions of A and B? A) A is a row matrix and B is a column matrix. B) A and B have the same dimension, but
asked by sandy on July 30, 2018 
Linear algebra
find the inverse of the following matrices if they exist. [1 2 3] [3 1 0] [2 1 1] the following represent a 3 x 3 matrices
asked by ZUkii on November 21, 2011 
Math
Can someone check my answer? Given matrices A,B, and C are all 2 x 2, determine whether the equation is true for the given matrices. C(A+B) = AC +BC My answer: False Matrix multiplication is not commutative. My answer: true For matrices, A + B = B + A My
asked by Natti on December 22, 2018 
Data management
Problems solving with Matrices [3 1] * [ 4 7 0] 2 5 3 5 1 I'm stuck with this matrices. Please help me~~
asked by Helen on July 23, 2015 
Math
I have a few questions about TMatrix. In excel, I am suppose to work with powered matrices to construct a weighted T matrix, using a scalar of .7. Does this mean I multiply each of the powered matrices by .7? Or do I power the powered matrices by .7? Or
asked by Lisa on October 13, 2010 
Mathematics
write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.
asked by SAMARA on July 16, 2012 
Mathematics
write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.
asked by INDIANA on July 12, 2012 
Mathematics
write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.
asked by Samara on July 20, 2012 
Mathematics
write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.
asked by INDIANA on July 11, 2012 
Mathematics
write the following simultaneous equations in the form of AX= B where A,X and B are matrices 11x+6y=6 9x+5y=7 hence write the solution for x and y as a product of two matrices.
asked by INDIANA on July 10, 2012 
Math: matrices
If A and B are both square n x n matrices, If AB = I, prove BA = I Presumably you have to do this without using the usual properties of the inverse of matrices. But we do need to use that if there exists a matrix B such that A B = I then the equation A X =
asked by mathstudent on December 4, 2006 
Math
Suppose C and D are 2 × 2 matrices with det(C) = −3 and det(D) = 2. Find the determinant of the matrices 8C^3D2 and 5 C^1
asked by Amelia on December 3, 2017 
matrices
Two matrices can be multiplied only if their sizes are compatible. Suppose that U is an m × n matrix, and that V is a p × q matrix. In order for U•V to make sense, what must be true of the dimensions of these matrices? Although matrix multiplication
asked by Yadlay on April 13, 2010 
math
Two matrices can be multiplied only if their sizes are compatible. Suppose that U is an m × n matrix, and that V is a p × q matrix. In order for U•V to make sense, what must be true of the dimensions of these matrices? Although matrix multiplication
asked by yadlay on April 15, 2010 
math
What does it mean to have two matrix variables written vertically inside parentheses? In other words, if A and B are matrices, what does this mean (imagine there is one set of parentheses spanning both rows): (A) (B) I'm trying to understand a least
asked by sergei on January 7, 2009 
math
step by step how do we find the value of x and y in this matrices by the law of matrices (3 2 4 0) (x y)=(7 12)
asked by swendy on October 18, 2011 
math
step by step how do we find the value of x and y in this matrices by the law of matrices (3 2 4 0) (x y)=(7 12)
asked by swendy on October 18, 2011 
algebramath
Make a preferred method of solving a system of linear equations and why. Which method do you prefer? Do you think that matrices make the process easier? Or do you prefer not to use matrices? Once again thank you for any help given on this.
asked by Mike on August 6, 2017 
Math
Use a system of equations to find the quadratic function f(x) = ax^2 + bx + c that satisfies the equations. Solve the system using matrices. f(−2) = 4, f(1) = −2, f(2) = −12 The answer i got is f(x)=2x^24x+8 this is the steps of how i got
asked by anonymous on April 9, 2019 
Math
Matrices are as follows reading left to right: X=MatrixForm{{0,1},{1,0}} Y=MatrixForm{{0,i},{i,0}} Z=MatrixForm{{1,0},{0,1}} H=MatrixForm 1/sqrt(2){{1,1},{1,1}} S=MatrixForm{{1,0},{0,i}} T=MatrixForm{{1,0},{0,exp(i(pi)/4)}} v=MatrixForm{{alpha},{beta}}
asked by Anon. on September 17, 2013 
Math
There are 18 animals in the barnyard. There are 50 legs. How many cows and how many chickens are there in the barnyard? Technically, I wonder if a chicken is an animal. And are chickens and cows the ONLY "animals" in the barnyard. If we assume a chicken is
asked by Miranda on November 27, 2006 
Precalculus
Find the values of x and y. Matrices.. [4 2 3 5 3 5 2 3 1] TIMES [2 x 5] EQUALS [9 38 y] It is difficult for me to type the matrices in but.... The first matrix is 3x3 consisting of 4,2,3 in the first row.. 5,3,5 in the second row ......2,3,1 in the
asked by Anonymous on May 21, 2014 
MATH!
The Mountain Trail Resort sold 64 condominiums last year, all 1, 2, or 3 bedroom condominiums. The total revenue from the sale of the condominiums was $5,493,000. The combined square footage of all the condominiums sold was 51,544 square feet. One bedroom
asked by hmmm... on November 2, 2009 
Math
The Mountain Trail Resort sold 64 condominiums last year, all 1, 2, or 3 bedroom condominiums. The total revenue from the sale of the condominiums was $5,493,000. The combined square footage of all the condominiums sold was 51,544 square feet. One bedroom
asked by please help(: on November 2, 2009 
MATH!
The Mountain Trail Resort sold 64 condominiums last year, all 1, 2, or 3 bedroom condominiums. The total revenue from the sale of the condominiums was $5,493,000. The combined square footage of all the condominiums sold was 51,544 square feet. One bedroom
asked by hmmm... on November 2, 2009 
Math.
The Mountain Trail Resort sold 64 condominiums last year, all 1, 2, or 3 bedroom condominiums. The total revenue from the sale of the condominiums was $5,493,000. The combined square footage of all the condominiums sold was 51,544 square feet. One bedroom
asked by please help(: on November 2, 2009 
Pre Calculas
7. For the function defined by: f(x)= {x^2, x1} a. evaluate f(0) 8. Solve the following system of equations algebraically. Verify your solution either graphically or by using matrices. 3xy=0 5x+2y=22 9. Solve the following system of equations
asked by Bob on October 6, 2015 
Hall
how do you do matrices
asked by Tiarre on December 19, 2007 
math
matrices
asked by khadija on January 28, 2016 
math
Why is (AB)^1 = B^1A^1 in matrices, and not (AB)^1 = A^1B^1
asked by katy on December 16, 2009 
Pre Calculas
7. For the function defined by: f(x)= {x^2, x1} a. evaluate f(0) 8. Solve the following system of equations algebraically. Verify your solution either graphically or by using matrices. 3xy=0 5x+2y=22 9. Solve the following system of equations
asked by Ryan on October 6, 2015 
Math
Solve for X using the matrices below. 2A + 4B = −2X A= ((8,5) (9,0) (5,6)) B= ((0,7) (4,0) (6,1))
asked by anonymous on March 31, 2019 
math
(3 2 4 0) (x y)=(7 12) find x and y in this matrices
asked by swendy on October 18, 2011 
math
4xy+z=5 2x+2y+3z=10 5x2y+6z=1 solving x,y,z with Matrices
asked by yumei on May 4, 2008 
Urgent please help! matrices
solve using matrices x+3y3z=12 3xy+4z=0 x+2yz=1
asked by Anonymous on December 7, 2011 
math
4xy3z=8 2x+2yz=3 6x+y3z=2 help me solve matrices
asked by jenny on March 13, 2013 
math
A and B are two matrices. If A= 1 2 4 3 Find B given that A^2 = A +B
asked by kudu on February 6, 2015 
math
matrices: A=[5 4 6 B=[2 4 5 9 8 7 8 9 3 4 3 9] 5 2 2] AB=? please show the work if you can.
asked by anonymous on February 8, 2010 
math
(BC)^2=(CB)^2, Where B and C are (n x n) in matrices.Is it true or false.
asked by Fakaapo. Suetusi on April 15, 2011 
Finite Math
Can someone please help me. I am not sure to work the following matrices. If A^4 = 3 4 4 5 and A^5= 4 5 5 6 What is A? Can you show me how you got this? Thank you so much ;)
asked by Katy on July 21, 2015 
calc
Find the inverse of each of the following matrices, if possible [i 3 1+i i]
asked by Anonymous on April 21, 2015 
algebra. help!
MATRICES What is the sum of [3/4 2/3]+[5/3 4/2]? a. [8/1 2/6] b. [2/7 2/1] c. [2/7 6/5] d. [2/7 6/5]** What is the difference of [3/4 2/3][2/7 5/12] a. [3/1 3/7] b. [1/3 3/15] c. [3/3 3/15]** d. [1/3 3/15]
asked by Hannah on January 26, 2015 
math
Solved problems on matrices
asked by Dm on November 6, 2011 
math
matrices: A=[5 4 6 9 8 7 4 3 9] B=[2 4 5 8 9 3 5 2 2] AB=? please show work if you can.
asked by anonymous on February 8, 2010 
Algebra II
Solve this system using matrices. 3.7x  2.3y + 4.2z = 8 2.6x + 4.6y  3.9z = 10 8x + 2z = 20
asked by JaneLee on October 26, 2007 
PreCalc
I have to solve these using matrices by hand. Can someone please help me? 2x3y2z=4 (1/4)x(2/5)y+(3/4)z=(1/3) 2x+1.3y3z=5 Thank you so much! :)
asked by Tori on December 3, 2012 
math
linear matrices? how to solve?
asked by me on May 7, 2009 
math
how will you solve these equations using matrices x+y=1 and 3x2y=4/3
asked by sha on June 27, 2010 
math
solve this system by matrices 2x+3yz=8 xyz=2 4x+3y+z=6
asked by jessica on February 24, 2009 
math
solve system by matrices 2x+3yz=8 xyz=2 4x+3y+z=6
asked by jessica on February 24, 2009 
Precalculs
Use matrices to solve x+ +2y+3z=7 x+2yz x+y2z=2 I've tried many way cant figure out
asked by Anonymous on April 21, 2016 
maths
x and y are two matrices x= {2 0} and y {4 1} {5 1} {3 7} evaluate x^2+y is the ans={8 1} {18 8}
asked by chantel on May 23, 2008 
MathJ.C.
Solve the system using matrices 4x+2y=2 5x+8y=30
asked by JaimeC. on October 22, 2013 
Math
Solve the following system of equations by using matrices. x2y=6 2yz=1 x+3z=7
asked by Lola T on September 23, 2017 
Analytic Geometry
Solve each equation using augmented matrices. 2x+y2z=7 x2y5z=1 4x+y+z=1
asked by Anonymous on October 3, 2007 
pre calculus
use matrices to solve the system of equations , if possible. 2x+y+2z=4 2x+2y=5 2xy+6z=2
asked by Anonymous on December 4, 2016 
pre calculus
use matrices to solve the system of equations , if possible 2x+3y+z=10 2x3y3z=22 4x2y+3z=2
asked by Anonymous on December 4, 2016 
Math
solve the following system of equations using matrices 4x2y=7 7x+y=13
asked by Keya on July 29, 2014 
math
Solve the following system of equations using matrices x = 2y + 6 2x + 2y = 16
asked by kailin on July 15, 2011 
maths
solve the following simultaneous equations using matrices 3x6y=24 and 4x+5y=23
asked by cecelia on January 2, 2008 
math
(BC)^2=(CB)^2 ,where B and C are (n x n) matrices.what is the answer, it is true or false
asked by Fakaapo on April 18, 2011 
math
slove the game with following payoff 3*3 matrices:((2,3,1/2)(3/2,2,0)(1/2,1,1))
asked by priya on May 29, 2016 
Discrete Math
( 0,0,0,1 0,0,1,0 1,1,0,1 1,1,1,0) How would I draw the adj matrices if i cannot connect c and a and d and b?
asked by Adedeji Ogunba on November 25, 2018 
Math
Suppose A and B are nonzero matrices such that A^2=0 and B^3=0(But B^2 does not =0) find in simplst form: a)(A+B)^2 b)(A+B)^3 c)(A+B)^4 d)(A+B)^5 e)(A+B)^6
asked by Amanda on October 29, 2008 
math
Solve the following matrices.(sORRY I DON'T KNOW HOW TO DO THE BRACKETS) B= 1, 4 2, 1 3, 0 D= 0, 1 1, 0 G= 3, 1 4, 5 FIND: a) DG = b) GD = c) BG = d) DD = e) GG =
asked by heidi on November 30, 2008 
math
solve the following system of the equations using matrices 10x5y=4 7x+y=10
asked by Keya on August 11, 2014 
college Linear Algebra
Give example of two nonzero matrices A and B such that A^2=0, B^2=0 but AxB and BxA do not equal zero.
asked by Amanda on November 6, 2008 
Linear Algebra
Give example of two nonzero matrices A and B such that A^2=0, B^2=0 but AxB and BxA do not equal zero.
asked by Amanda on November 6, 2008 
Linear Algebra
Suppose A and B are nonzero matrices such that A^2=0 and B^3=0(But B^2 does not =0) find in simplst form: a)(A+B)^2 b)(A+B)^3 c)(A+B)^4 d)(A+B)^5 e)(A+B)^6
asked by Amanda on October 29, 2008 
MATH
Perform the operation for each equation, if there is a solution (Matrices) [4k 8y ] [5k+6y 2k+1] [6z  3x]  [2z+5x z+4] [2k + 5a] [4k+6a 3a+2]
asked by Daria on December 1, 2010 
Maths
Let A,B and C be matrices such that A=(1 2 3 1 2 3) , B=(1 2 2 4 2 3) and C=AB. What is the sum of all the elements (entries) of matrix C?
asked by OIan on April 16, 2013 
calc
Is the matrix 6 0 0 5 a linear combination of the matrices 1 0 0 1 and 1 0 0 0 ? how do you figure this out?
asked by sam on January 13, 2015 
Math
Find a system of linear equations corresponding to the following augmented matrices: (a) 2 0 0 3 −4 0 0 1 1 (b) 3 0 −2 5 7 1 4 −3 0 −2 1 7 (c) 7 2 1 −3 5 1 2 4 0 1 (d) 1 0 0 0 7 0 1 0 0 −2 0 0 1 0 3 0 0 0 1 4
asked by Matt on October 25, 2011 
Matrices (math)
0.433= (45.6*A) + (3.152*B) 0.3363= (11.92*A) + (37.675*B) Solve for A and B using matrices
asked by Jess on May 2, 2013 
Matrices
Solve the system using matrices. Show all the row operations that you use. 3x9y=30 2x+5y= 2
asked by Tayb on September 21, 2016 
math
Find values of x and y, if any, that will make the matrices equal. [ x y ] = [ 3 5 ] 1 9 1 9 a. x=3,y=5 b. x=5,y=3 c. x=3,y=5 d. x=3,y=5 e. no solution
asked by laura on August 26, 2016 
algebra
solve the set of linear equations by the matrices method: a+3b+2c=3, 2ab3c=8,5a+2b+c=9
asked by linear on April 7, 2015 
PRECALC QUESTION
Solve for "x" and "y" given the following matrix equation: (2x, 0.5y, 2, 1) * (3, 2, 0, 1) = (24, 19, 6, 5) (the matrices are going from left to right, they're all 2x2's.)
asked by Aly on May 25, 2014 
Algebra
How would you solve this matrices using the Gaussjordan elimination method? {[5, 8, 10]} {[5, 8, 4]} {[10, 8, 5]} {[5, 4, 8]}
asked by Jesse on May 18, 2009 
math
Let A,B and C be matrices such that A=⎛⎝132213⎞⎠, B=(122423) and C=AB. What is the sum of all the elements (entries) of matrix C?
asked by ayan on April 16, 2013 
Linear Algebra
Find the inverse of the matrices if they exist. Use the algorithm introduced in this section. 1 2 1 4 7 3 2 6 4
asked by Allan on October 5, 2011 
PreCalculus/Trigonometry
Solve the following system of equations algebraically. Verify your solution by using matrices. 3xy=0 5x+2y=22
asked by Anonymous on September 29, 2014 
Math
Find the inverse for the following matrices: 2 and 4 is on top 6 and 3 is on bottom My answer is 90 120 180 60
asked by Aria on April 25, 2017 
math
use dominance to slove the game with following payoff matrices: ((2 3 1/2) (3/2 2 0) (1/2 1 1)). ANS: A=(1/4,0,3/4); B=(1/4,0,3/4); v=7/8. i got answer, but how to do this? i need solution
asked by priya on May 29, 2016 
precalc  JAI
Solve the system of equations using matrices. Use Gaussian elimination with back substitution. x+y+z = 5 xy+3z = 1 4x+y+z = 2
asked by Ciara on April 17, 2015 
HELP PLEASE
Solve the system of equations using matrices. Use Gaussian elimination with back substitution. x+y+z = 5 xy+3z = 1 4x+y+z = 2
asked by Ciara on April 16, 2015 
Buisness Math
Given the following matrices: Compute (i) AB (ii) A+2B (iii) AC (iv) 5C (v) BC Note:Give proper reason where computation is not possible.
asked by Syed Muhmmad ibadulah on December 8, 2013 
precalc
Solve the system of equations using matrices. Use Gaussian elimination with back substitution. x+y+z = 5 xy+3z = 1 4x+y+z = 2
asked by Ciara on April 16, 2015 
precalc
Solve the system of equations using matrices. Use Gaussian elimination with back substitution. x+y+z = 5 xy+3z = 1 4x+y+z = 2
asked by Ciara on April 16, 2015 
Math Help
Hi! I need help with this question. Thanks! Directions: To solve these problems, you need to find the inverses of these 2x2 matrices. a.) D= [3 6 6 12] b.) C= [2 1 7 3]
asked by Katy on March 30, 2015 
Solving system of linear equations
I already know the 3 methods of doing it, but I recently found out about using matrices to solve it. How exactly do you do that? All I can remember is something with rref on my calculator.
asked by Chopsticks on February 22, 2009 
pre  CALCULUS
Solve the system of equations using matrices. Use Gaussian elimination with back substitution. x+y+z = 5 xy+3z = 1 4x+y+z = 2
asked by Ciara on April 15, 2015 
PreCalculus/Trigonometry
Solve the following system of equations algebraically. Verify the solution by using matrices. 8x2y=5 12x+3y=7
asked by Anonymous on September 30, 2014 
Maths
7i1 + 9i2 = 3 5i1 + 7i2 = 1 where i1 and i2 represent current. Find the values of i1 and i2 using matrices. ? any help thanks
asked by Sammy on January 11, 2017 
business algebra
Use row operations on augmented matrices to solve the given systems of linear equations. x + y − z = 0 x + 2y + 4z = −3 3x − y − 22z = 19
asked by cameron on November 16, 2015