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If (sinalpha)x^2-2x+bgeq2, for all real ...

If `(sinalpha)x^2-2x+bgeq2,` for all real values of `xlt=1a n dalpha in (0,pi/2)uu(pi//2,pi),` then possible real value of `b` is /are `a2` b. `3` c. `4` d. `5`

A

2

B

3

C

4

D

5

Text Solution

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The correct Answer is:
A, C
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