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Find the value of a in order that f(x)=s...

Find the value of `a` in order that `f(x)=sqrt(3)sinx-cosx-2a x+b` decreases for all real values of `xdot`

A

`a lt 1`

B

`a ge 1`

C

`a ge sqrt2`

D

`a lt sqrt2`

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The correct Answer is:
B
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