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If A=|[3, 10],[ 2, 7]|, then write A^(-...

If `A=|[3, 10],[ 2, 7]|,` then write `A^(-1)`

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XII BOARDS PREVIOUS YEAR-BOARD PAPER SOLUTIONS-All Questions
  1. If vec a is a unit vector and ( vec x- vec a)dot( vec x+ vec a)=24 , ...

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  2. If A is a square matrix and |A| =2, then write the value of |A A ...

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  3. If A=|[3, 10],[ 2, 7]|, then write A^(-1)

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  4. Write the value of sin(2sin^(-1)(3/5)) .

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  5. If A is a 3xx3 matrix, whose elements are given by a(i j)=1/3|-3i+j...

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  6. Write the principal value of tan^(-1)(tan((9pi)/8))

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  7. For any three vectors vec a ,\ vec b and vec c , write the value...

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  8. Evaluate: int(x^2-3x)/((x-1)(x-2))dx

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  9. Evaluate: intsinxdot\ sin2x\ dotsin3x\ \ dxdot

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  10. A binary operation * on the set {0,1,2,3,4,5} is defined as: a*b={...

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  11. Let f: R rarr R be defined as f(x)=10 x+7. Find the function g: R ra...

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  12. Solve the equations.tan^(-1)(1-x)/(1+x)=1/2tan^(-1)x ,(x >0)

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  13. Prove the following: 9/8-9/4sin^(-1)(1/3)=9/4sin^(-1)((2\ sqrt(2))/3)

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  14. Evaluate: int(x^2)/((x^2+4)\ (x^2+9))dx

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  15. If tan^(-1)((x-1)/(x-2))+tan^(-1)((x+1)/(x+2))=pi/4, then find the val...

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  16. If y=cot^(-1)(sqrt(cos"x"))-tan^(-1)(sqrt(cos"x")), prove that siny=ta...

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  17. Find the image of the point having position vector hat i+2 hat j+4 ha...

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  18. Find the equation of a plane which is at a distance of 3\ sqrt(3) unit...

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  19. Evaluate : int xsin^(-1)\ x\ \ dx

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  20. Evaluate : int(dx)/(sqrt(5-4x-2x^2))

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