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A is a square matrix of order 3. write t...

A is a square matrix of order 3. write the value n, `|2A|=n|A|`.

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MODERN PUBLICATION-SAMPLE PAPER 2020-EXERCISE
  1. A is a square matrix of order 3. write the value n, |2A|=n|A|.

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  2. A discrete random variable X has the probability distribution as given...

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  3. Find the derivative of tan^(-1)((cosx+sinx)/(cosx-sinx)) w.r.t. x.

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  4. If f(x) = sin x + 2 in the interval [-pi/2,pi/2], what can you say abo...

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  5. Write the differential equation of all non-horizontal lines in a plane...

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  6. If veca and vecb are unit vectors and veca-vecb is also a unit vector,...

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  7. Write the axis to which the plane by+cz+d=0 is parallal.

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  8. Write down all the partitions of the set {a,b,c}.

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  9. Write the domain of the function defined by f(x)=sin^(-1)x+cosx

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  10. A man plans to start a poultry farm by investing at most ₹ 3000. He ca...

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  11. Test whether the relation : R = {(m, n):2|(m+n)} on ZZ is reflexive, ...

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  12. Prove that for any f:X rarr Y , f o idx = f =idY of.

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  13. Solve equation 3"tan"^(-1)1/((2+sqrt3)) - "tan"^(-1) 1/x ="tan"^(-1) 1...

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  14. Prove that tan (pi/4+1/2cos^(-1)""a/b)+tan(pi/4-1/2cos^(-1)""a /b)=(2b...

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  15. Two cards are drawn successively with replacement from a well-shuffled...

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  16. Find the inverse of the matrix [{:(4,-2),(3,1):}]

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  17. There are two families A and B. There are 4 men, 6 women and 2 childre...

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  18. Eliminate x,y,z from a=x/y-z, b=y/z-x, c=z/x-y

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  19. There are 25 girls and 15 boys in class XI and 30 boys and 20 girls in...

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  20. Show that the tangent to the curve x = a (t - sin t), y = at (1 + cos ...

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