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Three schools A ,\ B and C organised a m...

Three schools `A ,\ B` and `C` organised a mela for collecting funds for helping the rehabilitation of flood victims. They sold hand made fans, mats and plates from recycled material at a cost of Rs. 25, Rs. 100 and Rs. 50 each. The number of articles sold are given below. School/Article A B C Hand-fans 40 25 35 Mats 50 40 50 Plates 20 30 40 Find the funds collected by each school separately by sailing the above articles. Also, find the total funds collected for the purpose.

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RD SHARMA ENGLISH-ALGEBRA OF MATRICES-All Questions
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  2. Use matrix multiplication to divide Rs. 30,000 in two parts such that ...

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  3. Three schools A ,\ B and C organised a mela for collecting funds fo...

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  4. Prove that the product of matrices [cos^2thetacosthetasinthetacosthe...

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  6. Let F(x)=[cosx -sinx 0 sinx cosx 0 ...

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  7. Let A=[2 3-1 2] and f(x)=x^2-4x+7 . Show that f(A)=O . Use this result...

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  8. If A=[0 1 0 0] , prove that (a I+b A)^n=a^n\ I+n a^(n-1)\ b A where I ...

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  9. Let A ,\ B be two matrices such that they commute. Show that for an...

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  10. Let A ,\ B be two matrices such that they commute. Show that for an...

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  11. If A is a square matrix such that A^2=A , show that (I+A)^3=7A+I .

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  12. If A is a square matrix such that A^2=I , then find the simplified...

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  13. If A=[3\ \ \ 5] , B=[7\ \ \ 3] , then find a non-zero matrix C such...

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  14. Compute the indicated products: [a b-b a][a-bb a] (ii) [1-2 2 3][1 ...

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  15. Show that A B!=B A in the following case: A=[5-1 6 7] and B=[2 1 3 ...

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  16. Compute the products A B and B A whichever exists in each of the fol...

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  17. Compute the products A B and B A whichever exists in each of the fol...

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  18. Show that A B!=B A in each of the following cases: A=[[1, 3,-1],[2,-...

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  19. Evaluate the following: ([(1,3),( -1,-4))]+[(3 ,-2 ),(-1 ,1)])[(1 ,3,5...

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  20. If A=[[1, 0],[ 0, 1]] , B=[[1,0],[0,-1]] and C=[[0, 1],[ 1, 0]] , then...

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