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Range of f(x)=1/(1-2cosx) is:...

Range of f(x)=1/(1-2cosx) is:

A

`[1/3,1]`

B

`[-1/3,1]`

C

`(-infty, -1)cup[1/3, infty)`

D

`[-1, 1/3]`

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JBD PUBLICATION-MODEL PAPER (14)-EXERCISE
  1. Which of the following is the empty set?

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  2. Range of f(x)=1/(1-2cosx) is:

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  3. The radius of a circle whose arc of length 20pi subtends an angle of (...

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  4. The least value of p which makes the roots of the equations x^2+5x+p=0...

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  5. Number of four digit even numbers that can be formed using 0,1,2,3,4,5...

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  6. The value of 9^(1/3), 9^(1/9).9^(1/27)…………..upto infty is:

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  7. The value of x such that the points (8,1),(x,-4) and (2,-5) are collin...

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  8. The latus rectum of parabola 9x^2-6x+36y+19=0 is:

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  9. underset(nrarrinfty)lim (1^2+2^2+3^2+………+n^2)/n^3 is equal to:

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  10. Two dice are thrown simultaneously. The probability of obtainng a tota...

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  11. Show that:(cos18^@+sin18^@)/(cos18^@-sin18^@)=cot27^@,

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  12. Prove that (cos(90^(@)+theta)sec(-theta)tan(180^(@)-theta))/(sec(360...

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  13. Simplify: 2i^2+6i^3+3i^16-6i^19+4i^25

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  14. Find the constant term in the expansion of [(4x^2)/3-3/2x]^9

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  15. Find the value of (101)^4 using Binomial theorem.

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  16. Find the ratio in which YZ-plane divides the line segment formed by jo...

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  17. Which of the following sentences are statement? Give reason for your a...

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  18. Which of the following sentences are statement? Give reason for your a...

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  19. Are the following pairs of the statement negation of each other The ...

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  20. In a group of 400 people, 250 can speak Hindi and 200 can speak Englis...

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