I'm trying to graph logistic functions with slope fields.

dy/dx = .0003x(1000-x)

y = 1000/(1 + 15.393e^(-.3x)

The slope fields are not matching the book.  It should be a curve of growth leveling off at 1000.

Because they are big and small numbers, I'm wondering if my window is off.  It should be between 0 and 25 for x and 0 and 1000 for y.

Any help would be appreciated.  =)
in Using TI-83 Plus by

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