1.

Let f(x)=(x+1)^(2)-1, x ge -1. Then the set {x:f(x)=f^(-1)(x)} is

Answer»

`{0,-1,(-3 PM i SQRT(3))/(2), (-3-i sqrt(3))/(2)}`
`{0,1,-1}`
`{0,1}`
empty

Answer :C


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