Let $\displaystyle X$ be the set of cities, $\displaystyle a,b,c.$ Indicate which metric on $\displaystyle X$ must consider a traveller, if he moves in: a car, a plane, a train and a bike.
Let $\displaystyle X$ be the set of cities, $\displaystyle a,b,c.$ Indicate which metric on $\displaystyle X$ must consider a traveller, if he moves in: a car, a plane, a train and a bike.
I don't get well the problem. How to proceed?
This makes zero, absolutely no sense haha. Did you copy it wrong?