Practice question · Select all that apply
Which are genuine functionals, rules assigning one number to a whole path?
Hints
- A functional must take the whole path into account.
- A reading at one instant ignores everything else.
Show the answer
- B. Total fuel consumed along a delivery route
- C. Total advertising cost of a spend schedule over a year
- D. Lifetime utility of a consumption plan
Why
Integrals over the whole path are functionals; a reading at one instant is just function evaluation, it ignores every other moment of the curve.
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