Use a graph or level curves or both to find the local maximum and minimum values and saddle point(s) of the function. Then use calculus to find these values precisely. (Enter your answers as comma-separated lists. If an answer does not exist, enter DNE.) f(x, y) = sin(x) + sin(y) + sin(x + y) +3, 0≤x≤ 2π, 0≤ y ≤ 2π local maximum value(s) local minimum value(s) saddle point(s) (x, y) =

Two motorcycles start at the same point. One motorcycle travels 15km due north and stops. The second motorcycle travels 32km due west and stops. Which value is closest to the distance between the motorcycles when they stop?