Diff Eqs with the 89

Diff Eqs with the 89 - Set yi1 equal to the y coordinate of...

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Differential Equations on the TI-89 Change mode from 1: Function to 6: Diff Equations Go to the y= editor and press [Diamond/Yellow] and [|] Make sure “Solution Method” is Euler Make sure “Fields” is SLFLD Go to the y= editor and enter your derivative In y1’: Use [t] instead of [x] and use [y]1 (type y and a 1) instead of [y] In y2’: Use [t] instead of [x] and use [y]2 (type y and a 2) instead of [y] Drawing a solution curve through an initial condition: Set “t0” equal to the x (or t) coordinate of the initial condition
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Unformatted text preview: Set yi1 equal to the y coordinate of the initial condition Using Eulers Method: Set up the y= editor the same way as for the solution curve method (were actually using Eulers Method to draw the solution curve) In the Window screen set t0 equal to the initial x value (tmax doesnt really matter so long as it is larger than the x value of the point on the curve you are trying to approximate) Set the tstep equal to the step size Graph and trace. The calculator tells you tc, xc, and yc....
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This note was uploaded on 04/01/2008 for the course MATH 152 taught by Professor Sc during the Spring '08 term at Rutgers.

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