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Let's take a quick three question quiz now on when to use each of the
three models. Click on the answer you believe is correct. If you
don't feel comfortable about which model to use, go to the section on
modeling. (You can also
refer to the previous page for
a summary of the three input functions
we are using.)
Question 1: A 50 gallon drum of gasoline gets knocked over
into a river which feeds into a nearby lake. If we wish to model
how this gasoline gets distributed in the lake, we should we model
the spill as
- an impulse input function;
- a step input function;
- a sinusoidal input function.
John Hoggard <hoggard@math.vt.edu>
Last modified: Mon Aug 25 12:12:21 EDT 1997