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Find the cofactor of a(12) in the foll...

Find the cofactor of `a_(12)` in the following: `[(2,-3,5), (6 ,0 ,4), (1, 5,-7)]`

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Write the cofactor of a_(12) in the matrix [[2,-3, 5],[ 6, 0, 4],[ 4, 5,-7]]

If A_(ij) is the cofactor of the element a_(ij) of the determinant |(2,-3,5),(6,0,4),(1,5,-7)| , then write the value of a_(32)., A_(32) .

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Find the mean of the following data. (i) 3, 5, 3, 4, 2, 0, 7 and 10 (ii) 6.2, 5.6, 4.8, 11.2, 12.5, 7.4 and 6.3 (iii) 16, 39, 43, 120, 475, 248, 368

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Find minors and cofactors of all the elements of determinant |{:(-1,2, 3),(-4,5,-2),(6,4, 8):}|

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XII BOARD PREVIOUS YEAR PAPER ENGLISH-BOARD PAPER SOLUTIONS-All Questions
  1. Find the value of x\ and y\ if "2" [(1,3) ,(0,x)]+ "[(y ,0 ),(1 ,2)]...

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  2. Evaluate: |{:(" "a+ib,c+id),(-c+id,a-ib):}|

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  3. Find the cofactor of a(12) in the following: [(2,-3,5), (6 ,0 ,4), (...

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  4. Evaluate int(x^2)/(1+x^3)\ dx"

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  5. Evaluate : int0^1(dx)/(1+x^2)

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  6. A factory owner purchases two types of machines, A and B for his fac...

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  7. An insurance company insured 2000 scooter drivers, 4000 car drivers...

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  8. Evaluate: int(-a)^a\ sqrt((a-x)/(a+x))\ dx\ \

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  9. Find the equation of the plane passing through the point (3,4,1) an...

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  10. Find the shortest distance between the following lines: (x-3)/1=(y-5)/...

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  11. Find the point on the line (x+2)/3=(y+1\ )/2=(z-3\ )/2 at a distanc...

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  12. Evaluate : intsec^2(7-4x)dx

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  13. Write the adjoint of the following matrix: [[2,-1],[4,3]]

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  14. Write the value of the following integral: int(-pi/2)^(pi/2)sin^5x\ dx

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  15. A is a square matrix of order 3\ and |A|=7. Write the value of ...

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  16. If f\ : R-> R be defined by f(x)=(3-x^3)^(1//3)\ , then find fof(x)

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  17. Write the principal value of sec^(-1)(-2)

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  18. What positive value of x makes the following pair of determinants equa...

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  19. Write the distance of the following plane from the origin: 2x-y+2z...

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  20. Write a vector of magnitude 9 units in the direction of vector -2 h...

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