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Write the projection of the vector h...

Write the projection of the vector ` hat i- hat j` on the vector ` hat i+ hat j`

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XII BOARD PREVIOUS YEAR PAPER ENGLISH-BOARD PAPER SOLUTIONS-All Questions
  1. If A=[[2, 3],[ 5,-2]], write A^(-1) in terms of A

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  2. Using properties of determinants, prove the following: |[1,x,x^2],[...

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  3. Write the projection of the vector hat i- hat j on the vector ha...

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  4. Write the direction-cosines of the line joining the points (1, 0, 0...

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  5. Differentiate the following function with respect to x : (log\ x)^...

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  6. If y=log[x+sqrt(x^2+a^2)\ ] , show that (x^2+a^2)(d^2\ y)/(dx^2)+x(dy)...

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  7. Evaluate: int1^3(x^2+x)dx

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  8. Show that of all the rectangles inscribed in a given fixed circle, ...

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  9. Using integration find the area of the triangular region whose side...

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  10. Find the equation of the plane which contains the line of intersecti...

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  11. Find a unit vector perpendicular to each of the vector vec a+ vec ...

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  12. Find the angle between the following pair of lines: (-x+2)/(-2)=(y-...

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  13. Probabilities of solving a specific problem independently by A and ...

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  14. If x=a^(sin^-1 t) ,\ y=a^(cos^-1t) ,\ show that (dy)/(dx)=-y/x

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  15. Find the point on the curve y=x^2 where the slope of the tangent is eq...

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  16. Find the intervals in which the function f given by f(x)=sinx+cosx ,\...

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  17. A factory makes tennis rackets and cricket bats. A tennis racket ta...

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  18. Suppose 5% of men and 0.25% of women have grey hair. A grey haired ...

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  19. 2 tan^(-1) (cos x) = tan^(-1) (2 cosec x)

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  20. Prove that: cot^(-1)((sqrt(1+sinx)+sqrt(1-sinx))/(sqrt(1+sinx)-sqrt(1-...

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