A squirrel runs 15.0 m [N] and then turns and runs 8.0 m [W]. What is the squirrel's displacement? 1. 17 m [W 28° N]
2. 17 m [W 62° N]
3. 23 m [W 28° N]
4. 23 m [W 62° N]

Suppose that f : rn → rm and that a ∈ k, where k is a connected subset of rn . suppose further that for each x ∈ k there exists a δx > 0 such that f(x) = f(y) for all y ∈ bδx (x). prove that f is constant on k; that is, f(x) = f(a) for all x ∈ k