' - - File: VII_Slope2.txt
'     In the menu from the worksheet, click "Both Directions"
'     This program derives the particular solutions BOTH directions from  the initial values .

'      No direction is implied and the arrows are removed.
'      The previous graph is NOT erased--to compare with this update version.

F{x,y} = -2 * x * y                  ' The slope function.

a = -2  :  b = 2  :  n = 25
c = -2  :  d = 2  :  m = 25

x1 = - 0.75  :  y1 = -1          ' Initial condition for a particular solution.
x2 = -0.75   :  y2 = 1           ' A second for another particular solution.

PlotSlopeField[F, {a,b,n}{c,d,m}{x1,y1}{x2,y2}]

' Use the Shift-Z to zoom inward.  Note the arrows for the assumed directed flow.


