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                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          • Solution curves and Vector fields 1 : dy/dx=sin(x-y)
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Ready to use
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Question in Bill's workspace by Bill Foster

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Using Jsxgraph to draw the vector field for a differential equation of the form dydx=f(x,y)=sin(x−y), and also by moving the point (x0,y0) you can see the solution curves going through that point. 

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            If you want to modify f(x,y) simply change the definition of  f(x,y) and that of the variable  str in the user defined function testfield in Extensions and scripts. You have to use javascript notation for functions and powers in the definition of f(x,y).

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          • Solution curves and Vector fields 2 : dy/dx=x2−y2
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Ready to use
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Question in Bill's workspace by Bill Foster

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            Using Jsxgraph to draw the vector field for a differential equation of the form dydx=f(x,y)=x2−y2, and also by moving the point (x0,y0) you can see the solution curves going through that point.

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            If you want to modify f(x,y) simply change the definition of  f(x,y) and that of the variable  str in the user defined function testfield in Extensions and scripts. You have to use javascript notation for functions and powers in the definition of f(x,y).