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TI89EulerSlope

# TI89EulerSlope - BC x Name TI-89 Slope Fields Euler...

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IMSA BC 3 DE with 89 p.1 Fall 03 BC x Name: TI-89 – Slope Fields, Euler, etc. (assuming basic TI-89 knowledge) Mode Graph Diff Equations Y= F1 (9) Graph Formats Set: Solution Method Euler Fields Slpfld To graph a slope field: Under Y= , enter the differential equation in y1' =. Example: y1' = .2 * y1 * (4 - y1) (Those are regular multiplication asterisks.) Set the desired Window (using x - and y -values) and Graph. Under Window, tstep is the usual Step size in the Euler program. To plot a solution to a differential equation using Euler’s Method: As before, enter the differential equation under y1'. The initial condition will be seen as the point (t0, yi1), and you will need to enter each of these coordinates in the appropriate places. Under Window, set tstep for the usual step size. There are several options for seeing solution curves. (1) Under Window, for example, set: ncurves = 4. This will graph 4 distinct solution curves on the slope field.

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