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The range of the function f(x) = sin x +...

The range of the function f(x) = sin x + cos x is

A

a) `-sqrt2 lt f(x) lt sqrt2`

B

b) `-sqrt2 le f(x) le sqrt2`

C

c) `f(x) le sqrt2`

D

d) `0 lt f(x) lt sqrt2`

Text Solution

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The correct Answer is:
B
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