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The bookshop of a particular school has ...

The bookshop of a particular school has 10 dozen chemistry books, 8 dozen physics books, 10 dozen economics books. Their selling prices are Rs 80, Rs 60 and Rs 40 each respectively. Find the total amount the bookshop will receive from selling all

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Rs. 20160
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NCERT GUJARATI-MATRICES-EXERCISE 3.2
  1. Compute the indicated products: (i) [(a,b),(-b,a)][(a,-b),(b,a)] (i...

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  2. if A=[{:(1,2,-3),(5,0,2),(1,-1,1):}],B=[{:(3,-1,2),(4,2,5),(2,0,3):}]a...

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  3. A=[[2/3,1,5/3],[1/3,2/3,4/3],[7/3,2,2/3]] and B=[[2/5,3/5,1],[1/5,2/5,...

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  4. Show that costheta.[{:(costheta,sintheta),(-sintheta,costheta):}]+sint...

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  5. 2X+3Y=[[2,3],[4,0]] and 3X+2Y=[[2,-2],[-1,5]]

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  6. Find X, if Y=[3 2 1 4]and 2X+Y=[1 0-3 2]

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  7. Find the values of x and y, if 2[{:(1,3),(0,x):}]+[{:(y,0),(1,2) :}]...

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  8. Find x ,\ y ,\ z ,\ t if 2[x z y t]+3[1-1 0 2]=3[3 5 4 6] .

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  9. ifx[{:(2),(3):}]+Y[{:(-1),(1):}]=[{:(10),(5):}],find the values of X ...

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  10. Given 3[x y z w]-[x6-1 2w]+[4x+y z+w3] , find the values of x, y, z an...

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  11. If F(x) =[(cos x, -sin x,0),(sin x,cos x,0),(0,0,1)] show that F(x)F(y...

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  12. show that (i) [{:(5,-1),(6,7):}][{:(2,1),(3,4):}]ne[{:(2,3),(3,4):}...

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  13. Find A^2-5A+6I , if A=[2 0 1 2 1 3 1-1 0]

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  14. If A=[1 0 2 0 2 1 2 0 3] , prove that A^3-6A^2+7A+2I=0

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  15. If A A=[3-2 4-2]and I=[1 0 0 1], find k so that A^2=k A-2I.

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  16. Let A=[0-tan(alpha//2)tan(alpha//2)0] and I be the identity matrix ...

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  17. A trust fund has Rs 30,000 that must be invested in two different t...

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  18. The bookshop of a particular school has 10 dozen chemistry books, 8...

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  19. Assume X, Y, Z, W and P are matrices of order 2 xxn , 3 xxk , 2 xxp...

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  20. Assume X, Y, Z, W and P are matrices of order 2 xxn , 3 xxk , 2 xxp...

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