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Range of f(x) = 5 cos x-3 sin x+2 is...

Range of `f(x) = 5 cos x-3 sin x+2` is

A

`[2- sqrt34 , 2+sqrt34]`

B

`[- sqrt34 , sqrt34 ]`

C

`[sqrt34 -2, 2+ sqrt34 ]`

D

`[-1/2 sqrt34 , 1/2 sqrt34 ]`

Text Solution

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The correct Answer is:
A
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