1. Consider a function u = f(x,) where x = r cos(0) and y = r...

 

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1. Consider a function u = f(x,) where x = r cos(0) and y = r sin(0). Prove the following (a) = : u sin(0) r cos(0) - sin(0) + ur cos(0) r (b) 2 2 2 2 1 u + = + r 2 1. Consider a function u = f(x,) where x = r cos(0) and y = r sin(0). Prove the following (a) = : u sin(0) r cos(0) - sin(0) + ur cos(0) r (b) 2 2 2 2 1 u + = + r 2