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Direction Fields and Solution Curves

Enter the differential equation whose direction field you want to plot using as the independent variable. You can change the plot range of the direction field with the xmin, xmax, ymin and ymax values. The add solution curve button will add a curve through an initial point. This curve is tangent to the slope field for its length. The solution is only valid between singular points where the slope is vertical or undefined. The curve may be shorter than desired for very large ranges on the plot. You can drag the initial point to a new value with the mouse. You can add up to 10 solution curves. The clear curves button will remove all curves.
Based on a worksheet by Adrian Jannetta.