Thursday

April 24, 2014

April 24, 2014

Number of results: 5,533

**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 where P converts from ...
*Friday, July 20, 2007 at 2:19pm by mathstudent*

**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 uses dot products, it is ...
*Tuesday, April 13, 2010 at 11:13pm by Yadlay*

**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}
*Friday, May 23, 2008 at 9:51am by chantel*

**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
*Thursday, May 2, 2013 at 8:32pm by Jess*

**maths**

solve the following simultaneous equations using matrices 3x-6y=24 and -4x+5y=-23
*Wednesday, January 2, 2008 at 3:03am by cecelia*

**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?
*Tuesday, April 16, 2013 at 3:27am by OIan*

**Urgent please help! matrices**

solve using matrices x+3y-3z=12 3x-y+4z=0 -x+2y-z=1
*Wednesday, December 7, 2011 at 10:18pm by Anonymous*

**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 = 0 has the unique ...
*Monday, December 4, 2006 at 5:25pm by mathstudent*

**maths (matrices)**

Find the value of a in the determinant of {6 3] [4 a] is a)6 b)3 c) 0 d)-12 (have the answers just need to know the working to get it)
*Wednesday, March 12, 2008 at 11:12am by Keisha*

**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.
*Tuesday, July 10, 2012 at 9:51am by INDIANA*

**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.
*Wednesday, July 11, 2012 at 9:44am by INDIANA*

**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.
*Thursday, July 12, 2012 at 10:07am by INDIANA*

**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.
*Monday, July 16, 2012 at 12:53pm by SAMARA*

**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.
*Friday, July 20, 2012 at 9:54am by Samara *

**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.
*Saturday, October 27, 2007 at 7:25pm by JaneLee*

**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
*Monday, November 21, 2011 at 4:23am by ZUkii*

**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 [A|0] [B|A] (that is a 4x4 matrix represented as 4 2x2 matrices) The answer is in the form: [A^-1|0 ] [C |...
*Thursday, November 16, 2006 at 1:23pm by James*

**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)
*Tuesday, October 18, 2011 at 2:33pm by swendy*

**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)
*Tuesday, October 18, 2011 at 2:34pm by swendy*

**Math**

I have a few questions about T-Matrix. 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 am I completely off ...
*Wednesday, October 13, 2010 at 10:30pm by Lisa*

**Maths - Matrices**

I'm having trouble with doing this matrix proof The question is "Given some matrix A has the property A*2=A^-1, show that determinant A = 1, i.e |A| = 1" I've tried for ages, but I can't seem to do it, this is what I got to A^2= A^-1 |A^2| = |A^-1| |A|^2 = 1/|A| Can someone ...
*Sunday, March 29, 2009 at 2:48am by TP*

**Maths: Algebra Matrices Class 12th**

matrix{{0, 1, -1}, {2, 1, 3}, {1, 1, 1}} matrix{{1, -1, x}} matrix{{0}, {1}, {1}}=0 Find the value of x Don't give me the direct answer. Please tell me how to go about this. Draw in your notebook and then solve
*Monday, April 11, 2011 at 6:12am by Akash*

**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 uses dot products, it is ...
*Thursday, April 15, 2010 at 10:57pm by yadlay*

**maths**

a matrix X has a+b rows and a+2 columns while the matrix Y has b+1 rows and a+3 columns. both matrices XY and YX exist. find a and b. can you say XY and YX sre of same type? are they equal?
*Thursday, April 4, 2013 at 10:55am by edward*

**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}} Show by computation ...
*Tuesday, September 17, 2013 at 10:03am by Anon.*

**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 squares problem like this...
*Wednesday, January 7, 2009 at 10:35am by sergei*

**Algebra II (Matrices)**

My book doesn't solve it like a linear equation, they solve it by using inverse matrices. Solve the matrix equation: |4 -5||m|=|32| |1 2| |n|=|-5| A= |4 -5| |1 2| X= |m| |n| B= |32| |-5| Step 1. Find the inverse of the coefficient matrix. A^-1= 1/13|2 5| |-1 4| (I get confused...
*Friday, February 29, 2008 at 2:28am by Jon*

**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 an animal and that ...
*Monday, November 27, 2006 at 4:44pm by Miranda*

**Hall**

how do you do matrices
*Wednesday, December 19, 2007 at 7:40pm by Tiarre*

**math**

Why is (AB)^-1 = B^-1A^-1 in matrices, and not (AB)^-1 = A^-1B^-1
*Wednesday, December 16, 2009 at 8:30pm by katy*

**math**

4x-y+z=-5 2x+2y+3z=10 5x-2y+6z=1 solving x,y,z with Matrices
*Sunday, May 4, 2008 at 7:54pm by yumei*

**math**

(3 2 4 0) (x y)=(7 12) find x and y in this matrices
*Tuesday, October 18, 2011 at 11:43am by swendy*

**math**

4x-y-3z=8 2x+2y-z=3 6x+y-3z=2 help me solve matrices
*Wednesday, March 13, 2013 at 12:23pm by jenny*

**math**

solve system by matrices 2x+3y-z=-8 x-y-z=-2 -4x+3y+z=6
*Tuesday, February 24, 2009 at 10:09pm by jessica*

**math**

solve this system by matrices 2x+3y-z=-8 x-y-z=-2 -4x+3y+z=6
*Tuesday, February 24, 2009 at 10:28pm by jessica*

**math**

linear matrices? how to solve?
*Thursday, May 7, 2009 at 7:20pm by me*

**math**

(B-C)^2=(C-B)^2, Where B and C are (n x n) in matrices.Is it true or false.
*Friday, April 15, 2011 at 5:26am by Fakaapo. Suetusi*

**math**

Solved problems on matrices
*Sunday, November 6, 2011 at 6:12am by Dm*

**matrices**

find the sum or differnce [ -2 -1 7 ] [ -2 0 8 ] [0 -3 2 ] + [-9 5 -1 ]
*Monday, August 26, 2013 at 10:55pm by skyler*

**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 condominiums sold for...
*Monday, November 2, 2009 at 5:16pm by please help(:*

**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 condominiums sold for...
*Monday, November 2, 2009 at 6:59pm by hmmm...*

**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 condominiums sold for...
*Monday, November 2, 2009 at 8:12pm by hmmm...*

**Algebra II**

Solve this system using matrices. 3.7x - 2.3y + 4.2z = 8 2.6x + 4.6y - 3.9z = 10 8x + 2z = 20
*Friday, October 26, 2007 at 11:17am by JaneLee*

**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.
*Monday, February 8, 2010 at 7:06pm by anonymous*

**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.
*Monday, February 8, 2010 at 7:15pm by anonymous*

**math**

how will you solve these equations using matrices x+y=1 and 3x-2y=4/3
*Sunday, June 27, 2010 at 1:39am by sha*

**math **

(B-C)^2=(C-B)^2 ,where B and C are (n x n) matrices.what is the answer, it is true or false
*Monday, April 18, 2011 at 5:49am by Fakaapo*

**Matrices**

Gaussian row elimination method: (i) x+3y+z=4 x-2y-2z=3 2x+y-z=9 (ii) x+2z+y=0 2x+y+z=6 3x+3y+2z=14
*Saturday, August 13, 2011 at 6:00am by Zinnia*

**MathJ.C.**

Solve the system using matrices 4x+2y=2 5x+8y=30
*Tuesday, October 22, 2013 at 8:53pm by JaimeC.*

**math (matrices)**

Find the values of x and y for which: [2y+5] [x-1] [y - 2] = [ 3x ] is true. a. (-1, -1) b. (-2, -4) c. (5, 1) d. (-1, 4) I got B...?
*Sunday, May 24, 2009 at 3:43pm by sophie*

**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]
*Wednesday, December 1, 2010 at 9:00am by Daria*

**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 condominiums sold for...
*Monday, November 2, 2009 at 11:37am by please help(:*

**Analytic Geometry**

Solve each equation using augmented matrices. 2x+y-2z=7 x-2y-5z=-1 4x+y+z=-1
*Wednesday, October 3, 2007 at 9:20pm by Anonymous*

**math **

Solve the following system of equations using matrices x = -2y + 6 2x + 2y = 16
*Friday, July 15, 2011 at 1:33am by kailin*

**algebra 2--matrices.**

A grocer wants to m,ix three kinds of hard candy to sell for $2.40 per pound. He need 50 pounds of candy altogether. He mixes sour balls worth $3.50 per pound,butterballs worth $2.50 per pound, and starlight mints worth $1.75 per pound. He mixes twice as many butterball as ...
*Sunday, February 21, 2010 at 4:25pm by Alyssa.*

**math**

Solve the following matrices.(sORRY I DONT 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 =
*Sunday, November 30, 2008 at 8:49pm by heidi*

**Math**

Make a complete re search project on maths is interconnected with other subject i.e. Maths Vs computer using art with maths.
*Tuesday, June 5, 2012 at 4:01pm by Shivansh Tomar*

**Math**

Suppose A and B are non-zero 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
*Wednesday, October 29, 2008 at 11:19pm by Amanda*

**Algebra**

How would you solve this matrices using the Gauss-jordan elimination method? {[-5, 8, 10]} {[5, 8, 4]} {[10, 8, 5]} {[5, 4, 8]}
*Monday, May 18, 2009 at 1:12am by Jesse*

**maths letaracy,history,geography and life science **

im going to grade 10 next year,and i want to be a psychologist and im going for maths letaracy and history feild im realy not good with maths and i just found out a few weeks ago that i need pure maths to do psychology.i dont know what to do now ,i also dont know the jobs ...
*Saturday, October 26, 2013 at 8:02am by khanyisa maringa*

**Linear Algebra**

Suppose A and B are non-zero 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
*Wednesday, October 29, 2008 at 11:32pm by Amanda*

**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
*Wednesday, October 5, 2011 at 12:05pm by Allan *

**Pre-Calc**

I have to solve these using matrices by hand. Can someone please help me? 2x-3y-2z=4 (1/4)x-(2/5)y+(3/4)z=(-1/3) -2x+1.3y-3z=5 Thank you so much! :)
*Monday, December 3, 2012 at 2:41am by Tori*

**Maths - Matrices**

Matrix transformations- please help? let f be the linear transformation represented by the matrix M = (4 2) .......(0 -2) a) state what effect f has on areas and whether it changes orientation b) Find the matrix that represents the inverse of f c) Use the matrix you found in ...
*Thursday, May 22, 2008 at 10:29am by Anonymous*

**Maths B**

Charlotte received a score of 68 on both her English and Maths tests. The mean for English was 52 and the mean for Maths was 55. The standard deviations for English and Maths were 10 and 8 respectively. In which subject did Charlotte perform better? Explain your decision.
*Thursday, May 24, 2012 at 5:49am by Anna*

**Maths B**

Charlotte received a score of 68 on both her English and Maths tests. The mean for English was 52 and the mean for Maths was 55. The standard deviations for English and Maths were 10 and 8 respectively. In which subject did Charlotte perform better? Explain your decision.
*Thursday, May 24, 2012 at 9:02pm by Anna*

**Buisness Math**

Given the following matrices: Compute (i) AB (ii) A+2B (iii) AC (iv) 5C (v) B-C Note:Give proper reason where computation is not possible.
*Sunday, December 8, 2013 at 9:50am by Syed Muhmmad ibadulah*

**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?
*Tuesday, April 16, 2013 at 3:55am by ayan*

**math**

Solve the following matrices (I dont know how to do brackets so I will just use commas to seperate the numbers and put them in different lines) A= 0, -2, 3, 1 -3, 1, 0, 4 0, 5, -2, -1 B= 1, -4 -2, 1 3, 0 C= -1, 0, 2 0, 3, 4 0, 8, -1 E= 1 2 3 4 F= -2, 5 3, 7 0, 9 FIND: ) AE = b...
*Sunday, November 30, 2008 at 8:42pm by heidi*

**pre-calc**

solve each system of equations using matrices x+2y-3z=0 2x-4y=z=-7 -2x+2y-3z=4 I dont see how it is possible to even attempt a matrix on this text oriented site.
*Tuesday, October 24, 2006 at 1:09pm by Erica*

**Algebra II**

1. solve this system using matrices: 3.7x-2.3+4.2z=8 2.6+4.6y-3.9z=10 8x+2z=20 2. Write this system as a matrix equation: -2x+y=8 7x-3y=10
*Tuesday, October 23, 2007 at 10:36pm by JaneLee*

**math**

Solve the equation. 5 1 -4 2 -3 -5 X= 5 7 2 -6 2 5 The numbers are supposed to be matrices. I'm not sure how I would solve the problem
*Wednesday, October 30, 2013 at 3:44pm by Anonymous*

**Math**

Let A, B, and 0 be 2x2 matrices. Assuming that A is invertible, find a matrix C such that [A^-1|0 ] [C |A^-1] is the inverse of the partitioned matrix [A|0] [B|A]
*Thursday, November 16, 2006 at 2:16am by James*

**Math**

For questions 1 and 2, use the matrices below: A=[17 2 3] [11 4 -9] B=[10 6 -7] [-4 3 0] C=[1] [2] [-2] 1)Find A-B [17-10] [2-6] [3--7] [11--4] [4-3] [-9-0] =[7 -4 10] [15 1 -9] 2)Find BC, if possible. 10(-1) 6(2) -7(-2) -4(-1) 3(2) 0(-2) =[-10 12 14] [4 6 0] (I hope this ...
*Tuesday, February 26, 2008 at 1:42pm by Jon*

**Algebra**

16. I am supposed to multiply the matrices B and C by each other B is: 7 6 2 -3 -1 8 9 5 and C: 0 8 -2 1 Would someone mind showing me how to multiply CB? Thanks ~Saria
*Monday, January 5, 2009 at 6:35pm by Saria*

**Linear Algebra**

V = Mnxn is a space vector formed by all the square matrices. Is W = {A in Mnxn : A^x = A} a subspace of V? Thanks
*Friday, May 1, 2009 at 9:03pm by Isaac*

**Programming**

(i) What is binary tree (ii) Write a program to multiply any two matrices. (use any program of choice)
*Thursday, October 8, 2009 at 9:07am by Beta plus*

**Math Linear Algebra**

Find the inverses of the matrices. Let A = 1 2 5 12 b1 = -1 3 b2 = 1 -5 b3 = 2 6 b4 = 3 5 Find A^-1, and use it to solve the four equations. Ax = b1, Ax = b2, Ax = b3, Ax = b4
*Wednesday, October 5, 2011 at 12:14pm by Allan *

**maths**

i am told to do a project in maths it should involve a maths consept.pls help as to what should i do?
*Sunday, November 18, 2007 at 4:43am by chandini*

**Linear Algebra**

Give example of two non-zero matrices A and B such that A^2=0, B^2=0 but AxB and BxA do not equal zero.
*Thursday, November 6, 2008 at 10:20pm by Amanda*

**college- Linear Algebra**

Give example of two non-zero matrices A and B such that A^2=0, B^2=0 but AxB and BxA do not equal zero.
*Thursday, November 6, 2008 at 10:21pm by Amanda*

**Linear Algebra**

Find an example of 2 by2 matrices with a12 = .5 for which: a. A^2 = I b. A^-1 = A^T c. A^2 = A By the way, a12 means the first row and second column.
*Saturday, February 18, 2012 at 12:14am by fatih*

**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.
*Sunday, February 22, 2009 at 5:55pm by Chopsticks*

**Algebra**

[4,3_1,2]-[1,1_1,0]+[1,1_1,4] Re posting this one. this is a matrice and the question says perform the indicated operations where possible I do not understand matrices at all.
*Wednesday, December 16, 2009 at 8:56pm by mike*

**Maths**

A school has eleven Year 9 Maths classes of 27 students. Each class has 4 extra students added to it. Find the total number of students studying Year 9 Maths.
*Thursday, February 26, 2009 at 1:41am by Jessica*

**Algebra**

Let A and B be n x n matrices, assume AB is invertible and show that both A and B are invertible. what? AB is invertible -----> There exists a matrix X such that: (AB)X = 1 But (AB)X = A(BX). So, AY = 1 for Y = BX Also: X(AB) = 1 And thus ZB = 1 for Z = XA
*Thursday, May 31, 2007 at 1:17pm by Ashley*

**linear algebra**

Prove that the trace is a similarity invariant. In other words, if two matrices are similar, then they must have the same trace. Got the answer from Wikipedia: tr(AB) = tr(BA) tr(ABC) = tr(CAB) tr(P^-1 * A * P) = tr(P^-1 * P * A) = tr(A)
*Friday, July 20, 2007 at 3:49pm by mathstudent*

**Algebra-Matrix**

How would I do these Matrices? 1. |1/2 14 10 -8| 2, Let matrix A = [8 -2 4 7 ] Let matrix B = 2A, Find b_22
*Friday, August 12, 2011 at 6:25pm by lizzie*

**maths**

I am really facing difficulty in maths. I do my best to improve in maths but after entering in the examination hall during my exams, i just get confused. please help The proper name for the subject is mathematics or just "math" for short. Calling it "maths" calls attention to ...
*Wednesday, June 14, 2006 at 7:23am by devendri*

**Maths B**

Andrew got 68 for both English and Maths. The mean for english was 52 and the mean for Maths was 55. The standard deviations were 10 and 8 respectively. Determine the subject in which andrew did better
*Saturday, March 9, 2013 at 10:56pm by Will*

**Algebra(check pt 3)**

1)The dimensions of ST. S[7/12 -1/9] [-1/3 1/9] T[4 -5 2] [8 -1 3] answer=2x3 2)The pair of matrices that are inverses. P[3 1] Q[4 4] R[0 -1/4] [-4 0] [12 21] [1 3/4] S[7/12 -1/9] T[4 -5 2] U[-9 6 4] [-1/3 1/9] [8 -1 3] [-5 -2 3] V[3 1] [0 2] [-4 5] answer=S and R 3)Find the ...
*Saturday, July 28, 2007 at 3:06pm by erin*

**matrices**

Find the value of "a" if the deteminant of (6 3) (4 a)IS: a)6 b)3 c)0 d)-12 (the matrix is six above and four below,three above and "a" below)
*Thursday, March 13, 2008 at 10:07am by Keisha*

**college math**

system of equations: solve the following system of operations using matrices (row operations) {5x + y + z + w = -5} {x - 2y + 2z -3w = -4}
*Saturday, September 14, 2013 at 2:28pm by Cece*

**Matrices**

[0; x] = [-0.71 0.71; -0.71 -0.71][0.015; 0] + [-0.71 0.71; -0.71 -0.71][cos(y) -sin(y); sin(y) cos(y)][0.035; 0] I need to solve this matrix for x and y using Excel. Can someone tell me how to do it please?
*Saturday, December 18, 2010 at 5:00am by Claire*

**nvcc**

The sizes of two matrices A and B are given. Find the sizes of the product AB and the product BA, if the products are defined. A is 4 × 2, B is 2 × 4.
*Monday, December 10, 2012 at 10:16pm by fast*

**statistics**

among the exames in the examination 30%, 35% & 45% failed in statistics, in maths, & in atleast one of the subjects respectively. one student is selected at random. find the probability that: (a)he has failed in maths, (b)he passed in statistiics if it is known that he has ...
*Wednesday, October 27, 2010 at 12:24am by hhhh*

**probability**

among the exames in the examination 30%, 35% & 45% failed in statistics, in maths, & in atleast one of the subjects respectively. one student is selected at random. find the probability that: (a)he has failed in maths, (b)he passed in statistiics if it is known that he has ...
*Wednesday, October 27, 2010 at 12:32am by hhhh*

**Math**

Consider the matrices P = 3 1 1 3 and S = 4 2 2 4 Calculate P^n and S^n for different values of n and describe any patterns you observe. I cannot find any patterns at all. I would really appreciate any help at all. Thanks!
*Sunday, December 16, 2007 at 8:58pm by Cassandra*

**algebra 2**

i need answers to the pennfoster book matrices and determinants exam number :00703500. please make sure all the answers are correct. please and THANK YOU (:
*Thursday, September 10, 2009 at 11:14pm by hellomynameis*

**Maths**

Hey :) I'm sitting my maths non-calculator GCSE tomorrow and am currently revising. I'm doing a practise paper and am currently stuck on this question: Express A in terms of w. 3w + 20 A -------- = -------- 200 A + 12 -- What does the question mean? -- Can you explain to me ...
*Sunday, May 17, 2009 at 9:32am by Sarah*

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