1.\:\:\frac{\partial}{\partial x}(xy)
                                
                             
                                                    
                                
                                    2.\:\:\frac{\partial}{\partial y}(\frac{x}{y})
                                
                             
                                                    
                                
                                    3.\:\:\frac{\partial}{\partial x}(\ln(x^{2}+y^{2}))
                                
                             
                                                    
                                
                                    4.\:\:\frac{\partial}{\partial x}(\sqrt{x^{2}+y^{2}})
                                
                             
                                                    
                                
                                    5.\:\:\frac{\partial}{\partial x}(xe^{xy})
                                
                             
                                                    
                                
                                    6.\:\:\frac{\partial}{\partial y}(xe^{y})
                                
                             
                                                    
                                
                                    7.\:\:\frac{\partial}{\partial x}(\ln(xy))
                                
                             
                                                    
                                
                                    8.\:\:\frac{\partial}{\partial x}(e^{xy})
                                
                             
                                                    
                                
                                    9.\:\:\frac{\partial}{\partial x}(xe^{y})
                                
                             
                                                    
                                
                                    10.\:\:\frac{\partial}{\partial x}(13x^{5}-7x^{2}+8y^{3}+2x^{2}y^{2})