A school wants to award its student for the values of honesty,regularity and hard work with a total cash award of RS. 6000.Three times the award money for hardwork added to that given for honesty amounts to RS 11000.The award money given for honesty and hard work together is double the one given for regularity.Represent the above situation algebraically and find the award money for each value,using matrix method.apart from these values ,namely, honesty, regularity and hardwork, suggest one more value which the school must include for awards?

What is cube root of unity i.e. omega???

show tha a skew symmetric matrix of odd order has determinant =0

write a square matrix of order 2 which is both symmetric and skew symmetric?

find the number of all possible matrices of order 2*3 with each entry 0 or 1

the number of possible matrices of order 3x3 with each entry 0 or 1 is: (A)27 (B)18 (C)81 (D)512 andhow?

Two schools A and B decided to award prices to their students for 3 values, honesty(X),punctuality(Y), andobedience(Z). School A decided to award a total of Rs.11000 for the three values to 5,4,and 3 students while school B decided to award Rs.10,700 for the 3 values to be 4,3,5 2students . If all the 3 prices together amount to be Rs. 2700, then:

1. Represent the abuve situation by a matric waequation and form linear equations using matrix multiplication.

2. Is it possible to solve the system of equations so obtained using matrices?

3. Which value do you nprefer to be rewarded and why?

1) Using elementary transformations, find the inverse of the matrix

3 0 -1

2 3 0

0 4 1

prove that the diagonal elements of a scew symmetric matrix are all zero

1. A TRUST INVESTED MONEY IN TWO TYPES OF BONDS. THE FIRST BOND PAY 10% INTEREST AND SECOND BOND PAYS 12% INTEREST. THE TRUST RECEIVES  2800 AS INTEREST. HOWEVER, IF TRUST HAD INTERCHANGED MONEY IN BONDS THEY WOULD HAVE GOT 100 LESS AS INTEREST. USE MATRIX METHOD TO FIND THE AMOUNT INVESTED BY THE TRUST.

find the inverse using elementary transformation

[4 3 3]

[-1 0 -1]

[-4 -4 -3]

Two schools P and Q want to award their selsected students on the values of Discipline, Politeness and Punctuality. The school P wants to award Rs. x each, Rs.y each and Rs.z each for the three respective values to its 3,2 and 1 students with a total amount money of Rs.1000/- School Q wants to spent Rs.1500/- to award its 4, 1 and 3 students on the respective values. If the total amount of awards for one prize on each value is Rs.600/-, using matrices, find the award money for each value.

If li,mi,ni where i=1,m=2,n=3 denote the direction cosines of 3 mutually perpendicular vectors in space ,prove that AA^T=I wher A is a matrix and A^T is its transpose and I is a indentity matrix

if A is a square matrix such that, A²=A, then write the value of (1+A)²-3A.

if B, C ARE n ROWED SQUARE MATRICES AND IF A=B+C , BC=CB ,C²=0 ,THEN SHOW THAT FOR EVERY n is the element ofN, Aⁿ⁺¹ =Bⁿ(B+(n+1)C).

using elementary row operations find the inverse of the matrix  

0 1 2

1 2 3

3 1 1 

if matrix cos2pi/7 -sin2pi/7

sin2pi/7 cos 2pi/7 the whole power k = matrix 1 0

0 1 , then write the value of x+y+xy

let A=[2 3 AND F(X)= X² -4X+7. SHOW THAT F(A) =O. USE THIS RESULT TO FIND A⁵.

-1 2]

URGENT:

Find matrices A and B, if

2A - B = and 2B + A = .

a line can be drawn which divides the following figure into two separate pare. These two parts is could then fit together to make a square, which two numbers would you connect to make this line

Prove that the product of matrix [cos²0 cos0sin0 (below dis)cos0sin0 sin²0] & [cos²alpha cosalphasinalpha (below dis)cosalphasinalpha sin²0] is a null matrix where 0 & alpha diffre by an odd multiple of pie / 2.

 i m nt able to get anytng of ths concept plzz hepl :(

if AB r 2 matrices AB=B BA=A then A^2+B^2=

prove that

a²+b²/c c c

a b²+c²/a a

b b c^{2 +}a² = 4abc

If A is a square matrix such that A² = A. Show that :-

(I + A)³ = 7A + I

if A and B are symmetric matrices, then ABA is

a-symmetric

b-skew-symmetric

c-diagonal

d-scalar

1. Using matrix method, solve the following system of equations :

2/x + 3/y + 10/z = 4, 4/x - 6/y + 5/z = 1, 6/x + 9/y - 20/z = 2

2. For what value of x, the matrix [5-x x+1

2 4 ] is singular?

Give an example of two non-zero 2x2 matrix A and B. such that AB=0

there are two families M and N . there are 2 men , 2 women, and 4 childern in family N . and 4 men , 6 women and 2 children in family M . there commended daily allowance for calories is child : 1800, women : 1900 and man : 2400 and for protiens is man :55gm, woman : 45gm and child :33gm. using matrices algebra, calculate the total requirement of protiens and calories for each of the famlies ?

if A is any square matrix then prove that

AA^T is symmetric?

Ten students were selected from a school on the basis of values for giving awards and were divided into three groups. The first group comprises hard workers,the second group has honest and law abiding students and the third group consists vigilant and obedient students. Double the number of students of the first group added to the number in the second group gives 13, while the combined strength of first and second group is 4 times that of the third group. Find the number of students in each group.

There are two families A and B. There are 2 men 3 women and 1 child in the family A and 1 man 1 woman and 2 children are there in family B. The recommended daily allowance of calories is men 2400, women 1900, and children 1800. Represent the above data in matrix form...

Here how can we put into matrix form and please post answer with explaination... Please experts...:)

Construct a 2x2 matrix A[aij] whose elements are given by

aij = { i - j , if i = j

i + j , if i

Thanks

Raagini

For what value of k, the matrix( 2-k ) 3 is not invertible.

-5 1

If the matrix A is both symmetric and skew symmetric, then

A. A is a diagonal matrix

B. A is a zero matrix

C. A is a square matrix

D. None of these

If A = (aij) is a 2 x 3 matrix and aij = i+j, write down the matrix completely.