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about to only mathematics

A

` (0, (pi)/(2)+ sqrt (( pi)/(2))]`

B

` [ (pi)/(2), (pi)/(2)+ sqrt ((pi)/(2))] `

C

` [ (pi)/(6), ( pi)/(2)]`

D

`{ (pi)/(2)}`

Text Solution

Verified by Experts

The correct Answer is:
D
The domain of f(x) is {1} .
`therefore ` Range `(f) = {f(1)} = {(pi)/(2)}`
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