1.

Letf(x)= (1)/(2)[f( xy ) + f((x)/(y)) ]AA x, y in R ^(+)such thatf(1)= 0, f^(1)(1) =2Now answer the following f^(1) (3) =

Answer»

`1/3`
`2/3`
`1/2`
`1/4`

ANSWER :B


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