11.5#5

Hello Prof.Taylor,

This problem really needs your intervention:

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While non-interventionism has some attraction on a Friday night, OK.  This problem is really all about the chain rule (discussed in the book and in the lecture notes), for example 

∂W/∂s = ∂F/∂u ∂u/∂s + ∂F/∂v ∂v/∂s, 

and you are given all of the required components above for the values s=1 and t=0.