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If x=2costheta-cos2thetaandy=2sintheta-s...

If `x=2costheta-cos2thetaandy=2sintheta-sin2theta`, then `(dy)/(dx)` is

A

`(costheta+cos2theta)/(sintheta-sin2theta)`

B

`(costheta-cos2theta)/(sin2theta-sintheta)`

C

`(costheta-cos2theta)/(sintheta-sin2theta)`

D

`(cos2theta-costheta)/(sin2theta+sintheta)`

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XII BOARDS PREVIOUS YEAR-QUESTION PAPER 2022 TERM 1 SET 1-SECTION-B
  1. The function f(x)=2x^(3)-15x^(3)+36x+6 is increasing in the interval

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  2. If x=2costheta-cos2thetaandy=2sintheta-sin2theta, then (dy)/(dx) is

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  3. What is the domain of the function cos^(-1)(2x-3) ?

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  4. A matrix A = [a(ij)](3xx3) is defined by a(ij)={(2i+3j" ,"iltj),(5" ...

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  5. If a function f defined by f(x)={((kcosx)/(pi-2x)" , if " xnepi/2),(...

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  6. For the matrix X = [(0,1,1),(1,0,1),(1,1,0)] , then find (X^2- X) is

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  7. Let X = {x^2 : x in N} and the function f:N to X is defined by f(x) ...

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  8. The corner points of the feasible region for a linear programming prob...

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  9. The equation of the normal to the curve ay^2 = x^3 at the point (am^2 ...

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  10. If A is a square matrix of order 3 and |A|=-5 then |adj A| is

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  11. Write the simplest form : tan^(-1) (sqrt(1+x)-sqrt(1-x))/(sqrt(1+x) + ...

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  12. If for the matrix A =[(alpha,-2),(-2, alpha)],|A^3| = 125 , then the ...

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  13. If y=sin(m sin^(-1)x). then which one of the following equations is tr...

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  14. Write the principal value of tan^(-1)sqrt((3))-cot^(-1)-sqrt((3)) .

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  15. The maximum value of (1/x)^(x) is

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  16. Let matrix X = [x(ij)] is given by x= [(1,-1,2),(3,4,-5),(2,-1,3)]. Th...

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  17. A function f : R rarr R defined by f(x) = 2 +x^2 is

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  18. A Linear Programming Problem is as follows : Maximise / Minimise obj...

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  19. If x=-4 is a root of |(x,2,3),(1,x,1),(3,2,x)|=0 , then the sum of t...

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  20. The absolute maximum value of the function f(x) = 4x-(1)/(2)x^(2) in t...

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