Maths

A(t)=A'e^(-t/r)
where A(t) is the amount after time t, A' is the initial amount at t=0 and r is the decay time.

Give an interpretation of the parameter r.

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asked by Alice
  1. r is the length of time required for the amount of A to decrease by a factor of 1/e

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    posted by drwls

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