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The range of k for which the inequality ...

The range of k for which the inequality `kcos^2x-kcosx+1>=0AAxepsilon(-oo,oo)` is:

A

`k gt 1/2`

B

`k gt 4`

C

`1/2 le k le 4`

D

`1/2 le k le 5`

Text Solution

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The correct Answer is:
C
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VK JAISWAL-QUADRATIC EQUATIONS -EXERCISE (SUBJECTIVE TYPE PROBLEMS)
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  18. Find the number of integral vaues of 'a' for which the range of functi...

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  19. When x ^(100) is divided by x ^(2) -3x +2, the remainder is (2 ^(k +1)...

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  20. Let p (x) be a polynomial equation of least possible degree, with rati...

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