1.

If the function f: [2, oo) rarr [-1, oo) is defined by f(x)=x^(2)-4x+3 then f^(-1)(x)=

Answer»

`2-SQRT(x+1)`
`2+ sqrt(x+1)`
`(2-sqrt(x+1))/(5)`
`(2+sqrt(x+1))/(5)`

ANSWER :B


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