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If the function f:[1,oo)to[1,oo) is defi...

If the function `f:[1,oo)to[1,oo)` is defined by `f(x)=2^(x(x-1))` then `f^(-1)` is

A

`(1//2)^(x(x-1))`

B

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

C

`1/2(1-sqrt(1+rlog_(2)x))`

D

Not defined

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The correct Answer is:
B
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