1. 
                                \frac{dy}{dx}=\frac{1-y}{x-1}
                            
                                                    
                                2. 
                                \frac{dy}{dx}=-\frac{x}{y}
                            
                                                    
                                3. 
                                \frac{dy}{dx}=\frac{2y-x^{2}}{y^{2}-2x}
                            
                                                    
                                4. 
                                \frac{dy}{dx}=-\frac{x}{y}
                            
                                                    
                                5. 
                                \frac{dy}{dx}=-\frac{x+2}{y-3}
                            
                                                    
                                6. 
                                \frac{dy}{dx}=-\sqrt{\frac{y}{x}}
                            
                                                    
                                7. 
                                \frac{dy}{dx}=-(\frac{y}{x})^{\frac{1}{3}}
                            
                                                    
                                8. 
                                \frac{dy}{dx}=\frac{x(2x^{2}-5)}{2y(y^{2}-2)}
                            
                                                    
                                9. 
                                \frac{dy}{dx}=\frac{y\cos(xy)}{1-x\cos(xy)}
                            
                                                    
                                10. 
                                \frac{dy}{dx}=\frac{x(-2x^{2}+3xy+1-y^{2})}{-x^{3}+y+x^{2}y}