Which of the following rearrangements of the equation eˣ-2x-1=0 has a unique fixed-point solution in [1, 2]?
a. xᵢ₊₁ = eˣᶦ-1/2
b. xᵢ₊₁ = In(2xᵢ+1)
c. xᵢ₊₁ = eˣᶦ-xₜ-1
d. xᵢ₊₁ = In(2xᵢ-1)
e. None