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The range of the function f(x)=cos[x],-p...

The range of the function `f(x)=cos[x]`,`-pi//4 lt x lt pi//4`, where [x] denotes the greatest integer `lex` , is :

A

`{1,cos1}`

B

`{0,-cos1}`

C

`{0}`

D

`{0,-1}`

Text Solution

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The correct Answer is:
A
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