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Applications of Differential Equations

Population Dynamics

(continued from last page...)

We need to wrap a Solve command around the equation we created on the last page. The resulting command would be:

Solve[(malthus /. t -> 2010) == 310383948., k]

Notice the decimal point after the population value? Make sure you include it. This will ensure that Mathematica treats it as an approximate real number rather than an exact integer value. This matters here because Mathematica will find the set of all possible solutions in the complex plane if you leave this number as an integer. We don't want that!

Let's go see what it produces...


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ODE Laboratories: A Sabbatical Project by Christopher A. Barker

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