What is the image of the line Re(z)=1\text{Re}(z) = 1Re(z)=1 under the map w=1zw = \frac{1}{z}w=z1?
A circle ∣w−1/2∣=1/2|w-1/2| = 1/2∣w−1/2∣=1/2
A line u=1u = 1u=1
A circle ∣w∣=1|w| = 1∣w∣=1
A parabola v2=1−uv^2 = 1-uv2=1−u