Solve the following. Provide clean and clear well-handwritten complete solutions. Minimize erasures and provide a clear picture of the solutions thank you and Godbless.

Find the partial derivatives of the following. oz az 1. Find and or as given z = x2 + xy + yz; x = 2r+s,y=r-2s. Oz Oz 2. What is the sum of x - + y Ox ay given that zz = x2+ V2