Example: Graph the slope field for the differential equation: y ′ = x – y. | ||
Steps | Key Sequence | Screens |
1. Change Graphing Mode to Differential Equations | Press MODE | |
Press right arrow key | ||
Press 6 (for DIFF EQUATIONS) | ||
Press ENTER (to SAVE) | ||
2. Enter Differential Equation | Press Diamond key, then F1 (Y=) | |
NOTE: Use t for the independent variable and; use y1 for y in the differential equation y1′, y2 for y in the differential equation y2′, etc. |
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Type in differential equation | ||
3. Change Solution Method | Press Diamond, then | key (for Graph Formats Menu) | |
NOTE: Changing the solution method needs to be completed
only once – we will not consider other solution methods in this course. Choose EULER for Solution Method and SLPFLD for Fields. |
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4. Graph the Slope Field | Press Diamond key, then F3 key | |
NOTE: You can zoom in or out on the graph using the F2 menu. | ||
NOTE: You can change the resolution by pressing Diamond Key, then F2 and changing the value for fldres=. |