which scenario is the most amount of work : carrying a 10 N laod of laundry up one flite of stairs or carrying a 5 N load of laundery up 2 flights ofstairs

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

If anyone who can me with this hw? i would really appreciate it

If you let go of the notebook after lifting it, will it move? how?