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Let x ne 0 , |x| lt 1/2 and f(x) = 1 +...

Let `x ne 0 , |x| lt 1/2 ` and `f(x) = 1 + 2x + 4 x^2 + 8x^3 + ……` then , `f^(-1) (x) = `

A

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

B

`(x - 1)/(2)`

C

`(x + 1)/(2)`

D

`1 - 2x `

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A
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