Consider the complex numbers in the picture below:
Let \(S\) be the set of all complex numbers \(z\) satisfying \(|w+z| = |w| + |z|\)
for the complex number \(w\) above. Which of the complex numbers in the list \(s, t, u, v, w\)
are in set \(S\)? Answer in any order you like, separating the list by commas.