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If `f:[1,infty) to [1, infty)` is defined by `f(x) =2^(x(x+1))` then `f^(-1)(x)`=

A

`(x(+1))/2`

B

`(1+sqrt(1+4log_(2)x))/2`

C

`(1-sqrt(1+4log_(2)x))/2`

D

`2x(x+1)`

Text Solution

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The correct Answer is:
B
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AAKASH SERIES-FUNCTIONS -EXERCISE -II
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