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If cot""(2x)/(3)+tan""(x)/(3)=cosec""(kx...

If `cot""(2x)/(3)+tan""(x)/(3)=cosec""(kx)/(3)`, then the value of k is

A

1

B

2

C

3

D

`-1`

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2015-MULTIPLE CHOICE QUESTIONS
  1. Let f:RtoR be a continuous function which satisfies f(x)=int(0)^(x)f(t...

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  2. The value of lim(xto2)int(2)^(x)(3t^(2))/(x-2)dt is

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  3. If cot""(2x)/(3)+tan""(x)/(3)=cosec""(kx)/(3), then the value of k is

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  4. If thetain((pi)/(2),(3pi)/(2)), then the value of sqrt(4cos^(4)theta+s...

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  5. The number of real solutions of the equation (sinx-x)(cosx-x^(2))=0 is

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  6. The value of lamda, such that the following system of equations has no...

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  7. If f(x)=|(1,x,x+1),(2x,x(x-1),(x+1)x),(3x(x-1),x(x-1)(x-2),(x+1)x(x-1)...

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  8. Which of the following is not always true?

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  9. If the four points with position vectors -2hati+hatj+hatk,hati+hatj+ha...

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  10. If sin^(-1)(x-(x^(2))/(2)+(x^(3))/(4)-(x^(4))/(8)+......)=(pi)/(6) whe...

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  11. The area of the region bounded by the curve y=x^(3), its tangent at (1...

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  12. If log(0.2)(x-1)gtlog(0.04)(x+5) then

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  13. The number of real roots of equation log(e)x+ex=0

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  14. For all real values of a(0),a(1),a(2),a(3) satisfying a(0)+(a(1))/(2)+...

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  15. Let f:RtoR be defined as f(x)={{:(0","," is irrational"),(sin|x|","," ...

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  16. If the vertex of the conic y^(2)-4y=4x-4a always lies between the stra...

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  17. Number of intersecting points of the conic 4x^(2)+9y^(2)=1 and 4x^(2)+...

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  18. The value of lamda for which the straight line (x-lamda)/(3)=(y-1)/(2+...

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  19. if f:[0,pi//)toR is defined as f(theta)=|(theta,tantheta,1),(-tantheta...

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  20. If A and B are two matrices such that AB=B and BA=A then A^(2)+B^(2) e...

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