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thnk u for info bt i m in maharastra board and i coulnt find d tab of txtbook plzz hlp

The cost of 4kg. potato, 3kg. wheat, 2kg. rice is Rs. 60. The cost of 1Kg. potato, 2kg. wheat and 3Kg rice is Rs 45. the cost of 6kg. potato, 2kg wheat and 3kg rice is rs 70. Find the cost of each item per kg. by using elementary row transformations.hi mam is der text book excercise ans provided .. could u hlp m to provide d ans of all txt book excercise ....

[1 1 2]

[2 1 3]

[3 2 4]

x+2y+z=8

2x+3y-z=11

3x-y-2z=5

How to do product between two matrices

How to solve matrix of having three row and three columns.Give its formula.

(1) -1

(2) 5

(3) 4

(4) 13

-1 2 -1 0

2 3 0 1 We have veiwed the solution, in that the ans. is 16. But I couldn't solve

-1 3 2 3 this 4x4 matrices. Please explain.

2 4]if it exits

lesson Matrix, exercise no.2.1, question no.9

Can you please tell me how to solve it

- A=[12 4]

[10 -2]B=[3 -5]

[6 -7] FORMULA ND HOW TO SOLVE A.B

1) Ultmust care has to be taken while using secondary data

6 12]

that R2

_{ INTERCHANGE R2+2R1 then how to decide to take that 2R1 at any case how to decide it for inverse of matrix}find matrix X such that AX=B for

A=[1 2

-1 3] and

B=[0 1

2 4]

The amount of Rs. 5000/- is put into three investment of 6%, 7% and 8% per annum respectively. The total annual income from these investments is Rs 360/-. If the total annual income from the first two investments is Rs. 40/- more than the income from the third, find the amount of each investment by adjoint meathod.The sum of three numbers is 8, twice the second number when added to the first number gives 7. On adding the twice of the sum of First and second numbers to the thrice of the third numbers, we get 20. Find the number using matrix method using elementary row transformations.Q. Find the adjoint

A = $\left[\begin{array}{cc}2& -3\\ 3& 5\end{array}\right]$

-1 2]

The cost of 4 shirts of one type, 3 T-Shirts on the anothe type and 2 trousers of one type is 2700 Rs. The cost of 1 shirt same type, 2T- shirts of the type mention above and 2 trousersof the type is Rs 1300. the cost of 6 shirts ,2 T - Shirts and 3 trousers of the same type is Rs. 3500/-. find the cost of each item by matrix method and adjoint method.Find the inverse of the matrix|1 2 1 |

A = |-1 0 2|

|2 1 -3|

using elementary row transformations.

Hence solve the system of equation

x+2y+z = 4,

-x+2z=1,

2x+y-3z=0

What i want to know is in the circled part after i substitute the values how does 13 come and why does 3 stay the same?

Method A

$A=\left[\begin{array}{c}13\\ a-1\end{array}\right]\phantom{\rule{0ex}{0ex}}A{A}^{-1}=1\phantom{\rule{0ex}{0ex}}R.\left[\begin{array}{c}13\\ 4-1\end{array}\right]{A}^{-1}\left[\begin{array}{c}10\\ 01\end{array}\right]\phantom{\rule{0ex}{0ex}}{R}_{2}\to {R}_{2}-4{R}_{1}\phantom{\rule{0ex}{0ex}}\left[\begin{array}{c}13\\ 0-13\end{array}\right]{A}^{-1}=\left[\begin{array}{c}10\\ -41\end{array}\right]$

$\mathrm{B}-7.\mathrm{Show}\mathrm{that}\left|\begin{array}{ccc}{\mathrm{a}}_{1}{\mathrm{I}}_{1}+{\mathrm{b}}_{1}{\mathrm{m}}_{1}& {\mathrm{a}}_{1}{\mathrm{I}}_{2}+{\mathrm{b}}_{1}{\mathrm{m}}_{2}& {\mathrm{a}}_{1}{\mathrm{I}}_{3}+{\mathrm{b}}_{1}{\mathrm{m}}_{3}\\ {\mathrm{a}}_{2}{\mathrm{I}}_{1}+{\mathrm{b}}_{2}{\mathrm{m}}_{1}& {\mathrm{a}}_{2}{\mathrm{I}}_{2}+{\mathrm{b}}_{2}{\mathrm{m}}_{2}& {\mathrm{a}}_{2}{\mathrm{I}}_{3}+{\mathrm{b}}_{2}{\mathrm{m}}_{3}\\ {\mathrm{a}}_{3}{\mathrm{I}}_{1}+{\mathrm{b}}_{3}{\mathrm{m}}_{1}& {\mathrm{a}}_{3}{\mathrm{I}}_{2}+{\mathrm{b}}_{3}{\mathrm{m}}_{2}& {\mathrm{a}}_{3}{\mathrm{I}}_{3}+{\mathrm{b}}_{3}{\mathrm{m}}_{3}\end{array}\right|=0$

4. A farmer has 70 m of fencing, with which he encloses three sides of a rectangular sheep pen; the fourth side being a wall. If the area of the pen is 600 sq.m, find the length of its shorter side.

$\left[\begin{array}{ccc}1& 0& 1\\ 0& 2& 3\\ 1& 2& 1\end{array}\right]$

2 3 1

3 1 2]by using adjoint method.

Is there any Cayley-Hamilton theorem in Jee portion

Is there rank of matrix in Jee portion