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What is the value of abs[[a,b+c,1],[b,c+...

What is the value of `abs[[a,b+c,1],[b,c+a,1],[c,a+b,1]]` ?

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USHA PUBLICATION-MODEL QUESTION SET-MODEL QUESTION SET
  1. If x+y=4, xy=1 then what is the value of tan^(-1)x+tan^(-1)y?

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  2. What is the value of hata*hatb+hatb*hatc+hatc*hata if hata+hatb+hatc=v...

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  3. What is the value of abs[[a,b+c,1],[b,c+a,1],[c,a+b,1]] ?

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  4. If A is a 2xx2 non-singular matrix and absA=1/2 then which matrix is r...

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  5. Write the subinterval of (0,pi) in which sin (x+pi/4) is increasing.

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  6. What is the value of int0^2abs{x-1)dx?

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  7. Solve for x, cos^(-1)x +sin^(-1)((x)/(2)) =(pi)/(6).

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  8. If R and S are two equivalence relation on the set then prove that Rca...

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  9. Show that:4(cot^(-1)(3/2)+cosec^(-1)sqrt(26))=pi.

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  10. Prove that f:RrightarrowR such that f(x)=frac[2x^2][x^2+1] is neither ...

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  11. Factorize the following. [[a,b,c],[b+c,c+a,a+b],[a^2,b^2,c^2]]

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  12. Find B if B^(2)=[{:(17,8),(8,17):}]

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  13. If x,y,z are positive and are the pth, qth and rth terms of a G.P. the...

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  14. Find the adjoint matrix of the matrix [[2,5],[1,4]]

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  15. Solve the following : [[x,1,3],[1,x,1],[3,6,3]]=0

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  16. Find the point on the curve y^2 - x^2 + 2x - 1 =0 where the tangent ...

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  18. Find the equation of the tangent and normal to the curve y(x-2)(x-3)-x...

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  19. If f(x) = a In x + bx^2 + x has extreme values at x= - 1 and x = 2 the...

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  20. If y=x+frac[1][x+frac[1][x+...infty]] find frac[dy][dx], the rhs bein...

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