This is in Calculus. Provide clean and clear well-written and readable handwritten solutions. Minimize erasures and provide a clear picture of the solutions. Thank you and Godbless.

Find the partial derivatives of the following. Oz 1. Find and ar as given z = x r2+xy+yz. ; x=2r+sy=r - 2s. Oz Oz 2. What is the sum of x +yay given that z2 = x2 + yz