A common assumption is that the rate of discovery of new species is proportional to the
Chapter 4, Problem 23(choose chapter or problem)
A common assumption is that the rate of discovery of new species is proportional to the fraction of currently undiscovered species. If dt is the fraction of species discovered by time t, a recursion equation describing this process is dt11 dt 1 as1 2 dtd where a is a constant representing the disco
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