Question - Find the minimum value of $|1 + z| + |1-z|$.
I'm trying to solve the question by thinking of them as points in the Argand plane. The $|1+z|$ can be written as $|z - (-1)|$ which is the distance of $z$ from $(-1) $ on the Argand plane. But I don't understand how to find the second part on Argand plane like I did the first one. If I find the second point, then the answer will just be the minimum distance between both the points.