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Questions on the calculus of variations, which deals with the optimization of functionals mostly defined on infinite dimensional spaces.

17 votes
1 answer
1k views

What braking strategy is most fuel-efficient?

You notice a stop-light ahead of you and it is currently red. You can't run the red light, so you will have to brake, but braking wastes energy and you want to be as fuel efficient as possible. What …
David Spivak's user avatar
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